Alguien te regala la mitad del precio
Introduce este código en la aplicación al desbloquear. No está ligado a ti ni a este teléfono.
Un teléfono que funciona
como un instrumento de verdad.
Signal Collector registra de forma continua los datos de sensores, radio y red que tu teléfono alcanza, directamente en el teléfono — sin almacenamiento en la nube y sin que los datos medidos salgan del dispositivo.
Capturas reales · Pixel 10a
-
Una medición en curso. El anillo muestra satélites, redes y sensores según van llegando.
-
La elección de qué se mide. Cada fuente es una fila que dice qué registra.
-
Inicio, reinicio y parada, con la duración, la distancia y el número de registros encima.
-
La parte baja del panel: qué hace cada fuente y el archivo que sale del teléfono.
-
Ajustes: envío a tu propio servidor, unidades y qué ocurre al parar.
Prueba interna
La próxima versión, antes de que la tenga la tienda.
Cada compilación llega a la prueba interna antes de pasar a producción. Únete con la cuenta de Google con la que el teléfono ha iniciado sesión y la actualización llegará como cualquier otra.
Alcance del MVP
Una sesión.
Todo el contexto.
- 01GPS, GNSS y sensores del dispositivo
- 02Redes móviles: LTE / 5G / 3G / 2G
- 03Wi‑Fi, Bluetooth y contexto de red
- 04Mapeo continuo de internet por Wi‑Fi y red móvil
Para qué sirve
Cada caso termina
en un archivo.
Un instrumento de medida no se vende por la lista de sus fuentes, sino por la pregunta que responde. Seis de las doce situaciones para las que se construyó la aplicación: cada una, un paseo y, al final, un archivo.
El punto muerto de la sala de reuniones
Recorra la planta con el teléfono en el bolsillo y dicte una nota en cada puerta. Sale el caudal segundo a segundo, el AP en el que el teléfono estuvo de verdad y una sala en lugar de una discusión entre dos departamentos.
Un drive test sin furgoneta
Las dos SIM escaneando, GPS cada segundo, el teléfono bloqueado en el salpicadero. Cada cambio de tecnología, Cell ID o PCI queda como evento, así que los traspasos salen situados al metro.
Un estudio donde el GPS no da nada
En un almacén, el cielo es un techo. Marque cada pasillo con una foto desde el visor de la propia aplicación y recoja APs, enlaces MLO y distancias RTT: un mapa de cobertura antes de comprar el primer AP nuevo.
Sensores que informan por su cuenta
Decenas de termómetros BLE por un edificio, ninguno emparejado. Pase al lado y su temperatura, humedad y tensión de pila llegan con nombre y en unidades del SI, junto a los bytes de los que salieron.
Una prueba para el casero
Diez minutos de paseo dan un archivo con marca de tiempo, posición, potencia de señal y fotografías de las habitaciones. «Aquí hay cobertura en todas partes» se convierte en una afirmación que se puede comprobar.
Un cliente que no quiere nube
Mida como siempre y entregue a su propio S3, WebDAV o SFTP, o pase un archivo. Las fotos y las notas de voz nunca tocan la galería del teléfono, así que el acuerdo de confidencialidad sigue siendo firmable.
Trabajo que se puede
mirar.
La versión 1.5.1 lleva los doce idiomas en cada instalación, deja ver trabajando una exportación larga o un Reiniciar, y añade un cuaderno suelto para puntos, fotos y pruebas tomadas sin medición en marcha.
Idiomas que están de verdad
Google Play antes entregaba solo los idiomas que el teléfono tenía al instalar, así que la elección de idioma por aplicación ofrecía el checo y los demás sin textos detrás. Las doce traducciones se instalan ahora siempre.
Un cometa en la tecla
Descargar, Compartir y Reiniciar tardan de segundos a minutos en una medición grande. Ahora un cometa recorre el borde de la tecla, con la cola creciendo con la parte terminada, y una línea viva debajo dice cuánto va hecho, cuánto lleva funcionando y cuánto queda aproximadamente. El espacio libre aparece antes de que empiece la escritura: ámbar cuando va justo, rojo cuando la exportación no cabría.
Un cuaderno suelto
Los puntos de estudio, las fotos, las notas de voz, la prueba puntual de internet y un ciclo de caudal Wi-Fi ya no necesitan Iniciar. Sin medición en marcha van a un registro aparte sin colectores, sin wake lock y sin descontar de la hora gratuita, con su propia tarjeta, su propio archivo para compartir y su propio Vaciar.
Compartir desde el icono, controles del sistema
Mantenga pulsado el icono de la aplicación cuando la medición esté parada y Compartir está justo al lado de Iniciar; abre la aplicación y arranca la exportación de inmediato. Interruptores, campos de texto, opciones y mensajes son ahora controles estándar de Android: las teclas y el instrumento siguen como estaban.
Nothing lost
on the way out.
Version 1.5.0 adds no new key. It goes over everything that could cost a measurement its data — a Reset under a stray thumb, a point number used twice, an export torn in half by a second export — and closes each one, with a test that keeps it closed.
A Reset that asks first
The first touch on Reset deletes nothing. It opens a dialog that names what would go: the measurements, the photos and the voice notes. Cancel keeps everything; only a confirmation wipes. A thumb that brushes the key in a corridor no longer ends a day's work.
Points keep their numbers
Stop a measurement, start it again, mark a point: it gets the next number, not a repeat of one already in the file. The same holds for photo and voice marks, so two records never share one point index and the export stays unambiguous.
An export in one piece
Export takes a single atomic snapshot of the database, and two export requests at once queue instead of tearing one archive. The manifest is computed from the bytes that actually went into the archive, with a SHA-256 for every file. You get a readable archive or a plain error — never a silent torso.
Failures that stay failures
When the writer loses a batch, Stop cannot turn the run into a success. Encrypted Eddystone telemetry stops showing up as plausible plain numbers. Dual-SIM attribution, WPA3-only networks, probe time budgets and the microphone handoff are hardened, and the expandable cards tell TalkBack what they are.
Started without
opening it.
Version 1.4.0 puts Start and Stop where the hand already is — the quick settings shade and the app icon — and lets a marked point carry a photo and a voice, so what a corridor looked like leaves together with the numbers.
A tile in the shade
Start and Stop in the quick settings shade, within reach from any app and over the lock screen, where a widget cannot go. Over a secured lock it unlocks first — what it starts is location with a microphone. It measures with whatever the app measured with last, so one key never starts two different measurements.
Shortcuts under the icon
A long press on the app icon is the only control that is always on the home screen, so it offers the one thing that makes sense now: Start while nothing runs, Stop and Mark point once it does. The gate the launcher walks through is locked with a token no other app can read.
A photo and a voice at the point
A marked point can carry a photo taken through the app's own viewfinder, or a spoken note of up to ten minutes. The media never touch the phone gallery: they sit in the app's private storage and leave only through an export, which becomes a single tar.gz with a SHA-256 for every file.
Settings you can take with you
A new phone set up like the old one, without walking through two dozen sources by hand. Passwords go into the backup only if you ask, and only after a fingerprint, a face or the screen lock. The licence and the free hour never travel in it.
The data, open
to be looked at.
Version 1.3.0 puts the keys on the home screen, opens the measured rows inside the app, lets the controls be carried to the edge of the display, and starts reading sensors that are not in the phone at all.
Keys on the home screen
Three widgets that need no app opened first: a point mark with your own labels, a key that starts a saved set of sources, and a tile showing what one source is collecting. Each key keeps its own copy of what it starts, so a preset switched in the app later changes nothing on the home screen.
Rows you can read on the spot
Browse records opens the raw rows of the last measurement: filter by type and time, search the payload, and a sequence number that holds across the whole file. Marking and hiding is crossing out in the printout — the stored measurement and the export are untouched.
Keys carried to the edge
Hold Start, Reset or Stop and drag it to the bottom edge of the display; there it stays put while you scroll anywhere. Let go outside a berth and the key swings back with an overshoot as big as the distance it travelled.
Sensors that are not in the phone
BTHome, Ruuvi, ATC and pvvx, Eddystone telemetry. Read straight from the Bluetooth scan that is already running: nothing to pair, nothing to connect, no new permission. The values land named and in SI units, beside the bytes they came from.
A panel you can
put your thumb on.
Version 1.2.0 turns the screens into the front panel of an instrument. Switches light up as a whole, keys sink into their base under the thumb, and colour is left to mean a reading — everything else is grey.
Switches that light up as one
The switch is a rocker from a switchboard, cast from translucent red plastic. Switched on, the whole rocker glows instead of a dot in the corner; the I/O marking stays readable in both positions and the rocker always leans to the side that applies.
Keys that stand on a base
Start, stop and the export keys sit on their own base and a press sinks them into it, the same as the buttons here on the site. Haptics answer in the same order: a click going down, a quieter clack coming back.
Grey panel, colour that means something
The panel is neutral grey, so every colour on it is a reading: green for controls and for running, amber for warnings, red for stopping. A screen grid with divisions and dashed axes lies under the content.
Half the download
The release build is shrunk and optimised by R8, which took the bundle from 8.3 MB down to 4.3 MB, and the outdated library Google Play kept reporting is raised through the services that pull it in.
Edges instead
of pebbles.
Version 1.1.0 stops the app looking like a sketch. Shapes go to the right angle, measured values get a dial typeface, and selections become rows that say what each option means.
Sharp edges and a dial typeface
Cards, fields and buttons keep at most two pixels of rounding, and measured values are set in a face where every digit is the same width — a column of numbers no longer dances under the eye. Spacing sits on a four-point grid.
Rows with a description, not pills
Technologies, presets and targets are rows with the current value on the right. On a source with parameters, tapping the row switches it and the chevron opens its settings — a pill could not tell those two apart.
Units say what they changed
Switching units used to close the menu and leave no trace. The dialog now says what it switched to, where it shows up, and that the export stays in metres.
Out of testing,
into the world.
Version 1.0.0 is the first public release. The instrument itself is unchanged; what is new is that anyone can install it, try it for an hour before paying, and read the screens in their own language.
An hour of measuring, on the house
Every phone gets one hour of measuring time a year, split across as many measurements as you like — the tool is meant to be tried in the field, not from a screenshot. The remaining time and the date it comes back are shown right above the Start button.
Bought once, not rented
Unlocking is a single in-app purchase at the Google Play price for your country. No subscription, no expiry, and it follows the account onto every other phone you sign in to.
Permissions explained before they are asked
The first launch no longer opens with a stack of system dialogs. A screen says what each permission is for — and that location is what Android ties cells and Wi-Fi to — and the system asks only after you press the button.
Screens in your language
The app and this site speak a whole range of languages, chosen by the phone or set for Signal Collector alone. The export never follows: it stays in SI, UTC and English column names, so two files from two countries are still one dataset.
Ready for the world
and for the Store.
Version 0.10.0 completes the move to the production identity, adds full English and US units, closes the release blockers and gives the instrument a calmer, more precise visual system — without changing how it is operated.
English and Czech, neither one a bolt-on
Text is no longer produced inside the collection layer, and errors are no longer recognised by their wording. The language can be switched for the app alone, and an English phone never gets half-Czech screens. Numbers follow the locale; the export deliberately stays stable.
Metres, feet and miles
Units can follow the phone automatically, or be forced to metric or imperial in the settings. Only the screen and the notification are converted; the database and the scientific export always stay in SI.
A release with no silent traps
The production bundle requires the upload key, targets Android 16 / API 36 and carries the final identity app.signalcollector. Corrected permission checks close the crashes that followed a revoked permission, and the updated SSH client brings security fixes.
Around the globe
runs time itself.
Inside the globe sits only what has a bearing. Quantities without direction got their own bands outside the horizon, the operator composes the instrument themselves — and measured data can finally leave the phone by a route other than the share sheet.
Four quantities in the ring
Noise, temperature, pressure and now light. The angle along a band is time, not bearing — one minute split into seconds, so the head of the trace sweeps like a second hand with a gap behind it where values have aged out of the minute.
You compose the view
The middle button switches off whatever the cursor rests on. A switched-off row stays in the list with its value, only struck through: the filter changes the picture, not the measurement.
Data can leave on their own
The gear icon gained S3, WebDAV and SFTP destinations. Passwords are encrypted with a key from the Android Keystore, an address without https is rejected, and the server key fingerprint is verified.
You can see
where the signal came from.
The pulsing background circle gave way to a globe of the sky. Satellites sit where they actually are — and anything without a direction lights the whole ring instead of inventing a bearing.
Satellites in their real place
Android reports azimuth and elevation for GNSS only, and the app has recorded them since day one — there was simply nowhere to see them. Colour separates the constellation, size and brightness carry C/N0, a filled dot counts towards the fix. Verified on a Pixel 10a: 20 satellites from four constellations, 14 in the fix.
What has no bearing lights the whole horizon
Wi‑Fi gives strength, not azimuth; Bluetooth gives none either, and cells report only their identity. Samples without direction therefore ripple the entire ring rather than a sector — a sector would claim the signal came from there. The ripples also rotate, so not even the tallest of them points anywhere.
It tilts with the phone, not just turns
Lying face up it looks into the zenith, held upright it looks at the horizon — and what was near the horizon moves behind the phone. Collapsed, the card leaves a flat compass with a needle to north: calm, no flicker.
Scrolling that
never jumps away.
While hiding, the header used to take part of the gesture for itself and the content was re-measured under the finger. Now it only observes the scroll and takes nothing from it.
Content follows the finger the whole time
The finger used to drag while the page stood still until the header had collapsed — and on reversing direction it expanded again first. The header now sits above the content and takes no part in scrolling; it simply moves away, taking the status row with it.
Nothing is re-measured mid-scroll
It hides by offsetting at draw time, not by changing its height, so the content inset stays constant. Measured on a Pixel 10a: 0.30 % janky frames and no missed vsync across ten drags over the threshold where the header switches.
It returns the moment you pull down
Direction decides, not position — you do not have to scroll back to the top to get the header. Because it also returns mid-page, it got an opaque backdrop; otherwise the title would sit on top of the card text.
A scan that does not
pretend to be a measurement.
Android throttles Wi‑Fi scans and keeps handing back the same result meanwhile. The app used to write it down again and again — and the export then claimed a measurement every five seconds.
A repeated scan is recognisable
Every attempt records the state FRESH, THROTTLED or UNCHANGED together with the age of the result; per-AP records are written only for a fresh scan. Without that, the data could not tell you where measuring actually happened — and for a coverage map, that is the whole difference.
Six times denser sampling
Measured on a Pixel 10a: with throttling on, 70 rejected attempts against 45 fresh scans; with it off, zero rejections and a fresh scan every 4.2 s at the median. At walking pace that is one sample every 6 metres instead of every 40.
Points on a floor plan, throughput per network
GPS gives no position indoors, so a place marker was added — you stop, mark a point, walk on. And a new optional source visits the Wi‑Fi networks you list one by one and measures their actual throughput, not just their signal.
Every second
gets its own row.
Continuous internet measurement no longer leaves holes in the timeline. When measuring is impossible, the reason is written down — and a Wi‑Fi network that is gone is recognised at once, not ten minutes later.
A second without a measurement is still a row
A capacity burst or a manual speed test holds the link for several seconds, and the data used to be left with a gap — a full minute in the worst case. Now it says BUSY, naming who held the link. A missing second cannot be told apart from a failed measurement; a written one can.
A dead Wi‑Fi is recognised immediately
After losing Wi‑Fi, the app stayed bound to a network that no longer existed, and over six hundred samples claimed the internet was not answering. The handle is now dropped as soon as the system stops knowing about it, and the app waits for a new Wi‑Fi with internet.
A sample knows which Wi‑Fi it came from
SSID and BSSID were added to the quality record — until now only the direct Wi‑Fi source knew them, and measured quality could not be tied to a network. Android placeholder values (RSSI −127, frequency −1) are also left empty instead of looking like readings.
From your pocket you can tell
how the run is going.
The notification for a running measurement no longer just says “collecting data”. It shows the duration and the record count, refreshes every five seconds and speaks up when data stops being stored.
Time and count in the notification
On a dark screen you see 00:02:43 · 29,880 records instead of a terse line. The duration is pure collection time, the same as on the status card — a pause between Stop and Start does not count towards it.
Data loss reports itself
As soon as samples are dropped, their count joins the line, and the title changes when writing stalls or fails. It is the one thing worth reporting before the operator looks at the screen again.
Ready for Live Updates
The notification declares itself to the system as a Live Update — Android's counterpart to the iOS Dynamic Island, a strip inside the status bar itself. On the Android 16 build under test it does not render yet, because that part of the system is not switched on; the app is waiting for it, ready.
The colour tells you
what was just captured.
A wave crosses the background every time something is written — and now in a colour that says where the sample came from. From across the desk you can see not only that data is flowing, but what is being heard right now.
A colour per source
Green is sensors, blue networks, amber GNSS and violet Bluetooth. Sensors run at 50 ms, so green is a continuous swell with the other colours flashing through it — a blue flash is a network scan, a violet one Bluetooth.
The wave keeps off the text
It used to be drawn over the content as well, tinting the title in the header, the messages and the status row. Now it sits at the very bottom: it passes under the header but leaves the type alone.
Content runs under the bars
When the header hides on scroll, the cards continue under the status bar instead of stopping at it and leaving an empty strip above. The wave shows through under the bars too.
Start no longer overwrites
work in progress.
Start resumes the last measurement instead of quietly replacing it with a new one. Beyond that, the phone lets your pocket know when the connection drops or data stops being stored.
Start continues, it does not restart
Until now every Start opened a new measurement and the previous one became unreachable — it stayed in the phone, but only the new one could be exported. Now it continues, and a clean slate comes only from Reset, which deletes the previous measurement.
A pause does not count towards the duration
The duration is the sum of the time actually spent collecting, not the span from the first Start to the last Stop — for a run interrupted overnight that would claim fifteen hours of collection. In the export it is running_ms.
Interruptions are in the data
Every stop and every resume adds its own session record with a timestamp. The data therefore shows when collection ran and when it waited, so a pause is not mistaken for a hole in coverage.
A buzz at a hole in coverage
Losing the connection is a soft thud, regaining it two light taps, a failed write three firm knocks. The phone is in your pocket while you walk, and these are the events the screen cannot tell you about. Every buzz goes into the data as haptic, so a window can be cut around the vibration.
The counter runs live
The count is no longer sampled. At two thousand records per second it used to jump by more than five hundred; now it flows, and only the digits slow enough to read are animated. The figures have fixed slots and sit on the baseline.
A panel instead of a form
Start, Reset and Stop are solid colour fields — an unavailable switch turns translucent but keeps its colour. Export got its own plate with a label on which the size of the pending file grows, and a green wave crosses the background with every written sample.
How much ground
we actually covered.
This version adds distance walked next to the duration, in a way that does not credit metres to a phone lying on a desk. Beyond that, the capacity burst shows its progress and technology selection is driven by presets.
Distance walked, in metres
The status card shows Distance instead of a static source count. The value is stored with the session, so a finished measurement still shows it after an app restart, and in the export it is distance_m.
Metres, not GPS noise
A walker covers about 1.4 m between one-second fixes, while the uncertainty of a single fix is usually larger. Distance is therefore not measured between neighbours but by moving an anchor once it passes the threshold max(3 m, accuracy).
Location accuracy on show
The accuracy of the last fix sits under the metrics. When the position is too coarse to count towards distance, the card says so outright, so a number that will not move has an explanation.
The capacity burst shows its progress
A new record for the start of a burst puts its beginning into the data, not only its result. Meanwhile the UI runs a countdown next to the transport, and a burst interrupted by Stop is not left hanging.
Technology presets
“All” and “Clear all” became a single switch, with Default in front of it. The app recognises hand-tuned sensor values, asks before overwriting them and offers to keep them as the Custom preset.
Legible messages
A dark treatment tinted by message type, dismissible by dragging down. An error stays on screen for 15 seconds, an ordinary notice disappears after four.
Internet mapping
while moving through a building.
Continuous transfer mapping got its own card ahead of Start, a heartbeat began watching collection from the inside, and a code audit cleaned up the bindings to Android callbacks.
A card of its own for mapping
A separate card keeps continuous mapping apart from the one-off speed test. It can measure Wi‑Fi, cellular data or both transports at once over a specific Android Network.
A data estimate up front
The interface shows the upper bound before you start: at most 204 MB per 30 minutes for one transport and 407 MB for both.
A heartbeat over collection
A running check of the collectors, the writer and the write queue. The session then distinguishes an ordinary Stop, a writer failure and an interruption after the process died.
The export admits its gaps
The header carries the last stored timestamp, the trailing gap and the counts of accepted, written and dropped samples.
Audited callbacks
Registrations for GPS, GNSS, NMEA and navigation messages are visible in the export itself. Bluetooth Classic stores the states of the discovery cycle as well as the devices actually found.
Fixes from the code audit
The duration of a finished measurement is computed from stored timestamps, stopping the mapping leaves no NetworkCallback hanging, and sensors deliver data on their own thread.
Maintenance that
stops dropping samples.
No new measurement feature. A version born from a code audit, fixing the reliability of collection, writing and export, and moving the format to V3.
Dropped samples on show
When writing falls behind, the count appears in the app and goes into the header as dropped_samples. Samples used to vanish unannounced; ending a measurement no longer loses the last of them either.
Ranges hold
A setting outside the allowed range is pulled back into it, so a zero interval no longer spins a scan with no pause.
A disabled Bluetooth is recognised
With the adapter off, the sources are not marked as measured and ADAPTER_DISABLED goes into the export instead of a blank.
Collection off the main thread
The GNSS, location, Wi‑Fi RTT and cellular callbacks run aside, so raw GNSS no longer slows the controls. The microphone is released only after the read completes.
Format V3
SIGNAL_COLLECTOR_TXT_V3 adds the dropped_samples header and drops the source_timestamp_ns column, which only duplicated elapsed_realtime_ns.
Schema 2 without losses
The database moves by migration and existing measurements survive. Temporary files created for sharing are cleaned up, so the cache no longer grows by a whole measurement.
Transfer quality,
measured continuously.
Alongside the one-off speed test there is now a per-second stream of samples of real download, upload and RTT — bound to a specific network and enriched with radio context.
A sample every second
The measurement runs from Start to Stop and produces roughly one network_quality_sample per second.
What a sample holds
A 64 KiB download, an 8 KiB upload and three small HTTPS RTT probes. The output carries the real transfer times, short-term throughput, RTT min/avg/max, jitter, errors and timeouts.
Capacity burst
Every 30 seconds a network_capacity_probe is produced with a 1 MiB download and a 128 KiB upload.
Forced transport
The test can be sent over a specific Wi‑Fi or cellular Android Network, even when both are available at once.
Radio and location with the sample
Every sample carries the last Wi‑Fi or cellular radio context and the last known location, including its age.
Quality, not a record
The small samples are labelled as measurements of quality over time, not of maximum internet speed. The server layer supports the CLOUDFLARE, CUSTOM and LOCAL modes.
Controls that
stay where they are.
A small interface release. Actions no longer move with the state of the measurement, the top bar gives room to the content, and a message can be dismissed when it is in the way.
Download and Share stay put
The buttons keep their place. Without a finished measurement they are dimmed and inactive, not hidden.
A vanishing top bar
It hides when you scroll down and comes back when you scroll up.
Recommend from the bar
Prepares a new e‑mail with no recipient filled in, carrying a subject, a message and links to the app.
Dismissible messages
Status notices are a bottom message that can be closed; otherwise they disappear on their own after a longer interval.
The storage note moved down
The note about local data storage now sits at the very bottom, visually subdued.
Active scan
and a measured speed test.
This version introduces an experimental active cellular scan with an exact reason for refusal, and a full speed test bound to the transport actually chosen.
Active scan events
Unambiguous ACTIVE_NETWORK_SCAN_REQUESTED, STARTED, RESULT, COMPLETE and FAILED instead of guessing support from the phone brand.
The exact reason for refusal
A failed scan stores the numeric code, the exception type, the message, the carrier privileges state and the state of the MODIFY_PHONE_STATE permission.
Kept apart from passive cells
The result carries scan_mode=ACTIVE_NETWORK_SCAN and only the operator Android supplied; an unknown one stays UNKNOWN.
A test over the chosen transport
Manually over MOBILE, WIFI or sequentially BOTH, with the traffic genuinely bound to the requested Android Network. The options offered follow the validated networks available.
A complete test summary
speed_test_result carries download and upload in Mb/s, bytes and times, the minimum, mean, median, maximum and p95 RTT, jitter, packet loss, errors and the server — together with the last cell or Wi‑Fi context.
Collection that survives
The measurement continues in the background through a foreground service, preferences survive a restart, and from an estimated 10 MB upwards the export preselects GZIP.
Instalación
Se instala únicamente
desde Google Play.
- 1
Instálala desde Google Play — sin invitación, sin lista de probadores, sin esperas.
- 2
Mide hasta una hora al año sin pagar nada.
- 3
Desbloquea la medición ilimitada desde dentro de la aplicación cuando la hora deje de bastarte.
Google Play es el único canal de distribución: firma la cadena de actualizaciones y en ningún sitio se ofrece un APK directo. La aplicación en sí no necesita ninguna cuenta nuestra ni ningún servidor nuestro para funcionar.
Prueba, precio y soporte
Una hora al año
para decidirte.
Un instrumento de campo no se puede juzgar por capturas, así que Signal Collector entrega a cada teléfono una hora de tiempo de medición al año — suficiente para recorrer una ruta, ver cómo se llena el anillo y abrir la exportación. Se cuenta el tiempo de medición, no el número de sesiones, así que puede gastarse en varios sitios y varios días. Cuando se agota, el desbloqueo es una compra única dentro de la aplicación al precio de Google Play para tu país: sin suscripción, sin fecha de renovación, y vale en todos los teléfonos con la misma cuenta.
Los comentarios llegan por la reseña de Google Play; cada reseña nueva se recoge en un día, se convierte en una incidencia y se responde, y las correcciones viajan con la siguiente actualización. La aplicación de pago no lleva publicidad, ni analítica, ni SDK de terceros dentro de la medición — el precio es lo que paga el desarrollo en su lugar.
Lo que la aplicación recoge realmente
De los sensores físicos
a las redes que te rodean.
Cada fuente se puede activar o desactivar por separado antes de una medición, y en tecnologías seleccionadas también se puede fijar el intervalo.
Red móvil
Celdas servidora y vecinas, parámetros LTE/NR/3G/2G, cambios de registro y el escaneo activo experimental.
GNSS y ubicación
GPS a 1 Hz, satélites, mediciones GNSS en bruto, reloj, AGC, mensajes de navegación, NMEA e información de antena.
Wi‑Fi y RTT
La conexión actual, puntos de acceso cercanos, Wi‑Fi 7 MLO, capacidades y distancias RTT/FTM a los puntos de acceso compatibles.
Bluetooth
Búsqueda clásica y la carga de anuncio BLE, incluidos los datos de fabricante y de servicio.
Sensores y ruido
Movimiento, campo magnético, presión, luz, proximidad, vector de rotación y un nivel dBFS orientativo sin guardar audio.
Red y transferencia
Muestras por segundo de descarga, subida, RTT, jitter y tiempos de espera reales, ráfagas de capacidad de 30 segundos y vinculación simultánea a una red Wi‑Fi y una red móvil concretas.
SIM y eSIM
Ranura, operador, MCC/MNC, roaming y qué tarjeta lleva los datos — las celdas por sí solas nombran al transmisor, no a quien estaba mirando. No se registra ni el ICCID ni el EID: son identificadores permanentes de la suscripción que sobreviven incluso a un cambio de teléfono.
Sensores externos
Un sensor que no está
dentro del teléfono.
El teléfono mide aquello a lo que alcanza. Una sonda en la pared, un medidor en un cable, un receptor en el tejado: esos tienen que entrar por otra vía. Hay cuatro vías, y la primera ya funciona.
Sensores que emiten · ya funciona
BTHome, Ruuvi, ATC y pvvx, telemetría Eddystone. No hay nada que emparejar ni a qué conectarse: el sensor lanza su lectura a la habitación y el escaneo que ya está corriendo la oye. Temperatura, humedad, presión, CO₂, partículas, tensión: con nombre, en unidades del SI, en el mismo archivo que todo lo demás.
Perfiles de Bluetooth LE · previsto
Environmental Sensing describe sus propias mediciones, así que incluso un medidor del que nadie ha oído hablar se puede leer junto con su unidad. A su lado, los perfiles estándar —batería, termómetro, posición— y el servicio Nordic UART, que es como habla un montaje casero.
Una línea serie por cable · previsto
CDC-ACM, FTDI, CP210x, PL2303, CH340. Cinco familias de chips cubren casi todo lo que se enchufa por USB y no es un disco: placas Arduino y ESP32, receptores u-blox, analizadores de espectro, medidores que responden en SCPI.
Un dispositivo en la red local · previsto
Se encuentra por mDNS y se lee por HTTP o como un simple flujo TCP. La petición va atada a la red Wi-Fi, para que no salga por los datos móviles y se pierda camino de un aparato que está en la habitación de al lado.
Nada se adivina. Una lectura que el propio sensor marcó como inválida se omite en lugar de escribirse como número; un payload cifrado se registra como cifrado y no se descifra en ficción; y un formato que la aplicación no conoce se queda en el archivo como bytes en bruto. Las claves las enumera el diccionario de datos.
Controles fuera de la aplicación
Una tecla que no necesita
abrir antes la aplicación.
Medir sobre el terreno significa una mano en el teléfono y la otra en otra cosa. Por eso cada control que importa tiene también su sitio fuera de la aplicación, y todos envían exactamente la misma orden que la pantalla.
Panel de medición
Un widget que inicia el conjunto de fuentes e intervalos guardado en él. Mientras mide lo dice, lleva las cifras de la medición y un segundo toque pregunta antes de detenerla. La tecla guarda su propia copia de lo que inicia, así que cambiar después un ajuste preestablecido en la aplicación no altera en silencio lo que mide la pantalla de inicio.
Marcar punto
Hasta cuatro etiquetas propias una al lado de otra: puerta, esquina, ventana son un toque cada una y se escriben en el punto de inmediato. Si no hay nada en marcha, la tecla inicia la medición y marca el punto de una vez.
Mosaico de fuente
Una fuente como un solo número grande: puntos de acceso al alcance, satélites en el fix, sonoridad. Un toque cuando no hay nada en marcha inicia una medición solo con esa fuente.
Lista de fuentes
Hasta seis fuentes, una línea cada una, en el orden en que las elegiste: una lista para leer de un vistazo, no para buscar en ella.
Mosaico en los ajustes rápidos
Iniciar y detener desde cualquier aplicación y sobre la pantalla de bloqueo. Mide con aquello con lo que midió la aplicación la última vez. Sobre un bloqueo protegido pide primero desbloquear el teléfono: lo que arranca es la ubicación con el micrófono.
Accesos directos bajo el icono
Una pulsación larga en el icono ofrece Iniciar mientras no hay nada en marcha, y Detener con Marcar punto en cuanto lo hay. El punto se marca sin etiqueta: las etiquetas están en la tecla del widget, donde hay sitio para ellas.
La notificación
Durante la medición lleva la duración, el número de registros y la distancia recorrida, y debajo Marcar punto y Detener. Iniciar puede quedarse en la persiana todo el tiempo que no haya nada en marcha, para que medir por tramos no signifique buscar la aplicación cada vez.
Las teclas las redibuja la propia medición, una vez cada cinco segundos: un widget no puede ser más fresco que la aplicación que lo alimenta. Por eso cada tecla lleva la hora a la que se leyeron sus cifras; la excepción es el cronómetro, que corre solo. Todas se configuran en un mismo sitio, Teclas en la pantalla de inicio en el menú de ajustes, y las describe la ayuda.
Prueba de campo, 10 de agosto de 2026
Datos de un teléfono
real.
Todo lo de abajo se midió en un Google Pixel 10a con Android 16. En la versión 0.7.2, una sola medición en tres tramos recogió 87.597 registros: la duración creció de 2:49 a 7:21 y a 8:12, el número de medición no cambió nunca, y más de veinte minutos de pausas entre los tramos no contaron para la duración. Las cifras de distancia vienen de una sesión de nueve minutos de la versión 0.7.1 en el mismo teléfono — el filtro de distancia no ha cambiado desde entonces.
Las primeras 274 fijaciones tuvieron una precisión de entre 9 y 114 m. Sumar las distancias entre fijaciones vecinas daría 429 m, o 28 m una vez filtradas las fijaciones groseras; mover el ancla más allá del umbral dio cero. El teléfono de prueba no tenía SIM, así que la rama móvil del mapeo informó correctamente de que la red no estaba disponible.
Versiones y material
Instalación, cambios
y código fuente.
El repositorio sigue siendo privado. Los colaboradores con acceso encuentran en él el código fuente, las versiones etiquetadas y las sumas de verificación de los APK.
Privacidad
Los datos medidos nunca salen del teléfono.
La aplicación funciona sin conexión y no contiene ningún SDK de analítica, publicidad, atribución o informes de fallos — y no se añadirá ninguno. Cada biblioteca con la que está construida está nombrada en la política de privacidad, cada una fijada a una versión exacta, de modo que nada cambia dentro sin una versión que lo diga. El mapeo continuo opcional de la calidad de transferencia usa los endpoints públicos de Cloudflare Speedtest para pequeñas transferencias HTTPS de prueba y ráfagas periódicas; no es una medición de la velocidad máxima de internet. El módulo está desactivado por defecto. Si compras el desbloqueo, sale del teléfono un aviso de compra que no lleva ningún dato medido; está descrito en la política de privacidad. Una exportación puede contener datos de ubicación sensibles e identificadores de redes cercanas.
Cómo funciona
De un sensor
a una fila en un archivo.
Cada fuente va a su propio ritmo. Una muestra se sella con una hora y la última ubicación conocida, pasa por una cola no bloqueante y se guarda por lotes en la base de datos local. Las claves subrayadas del diagrama llevan al diccionario de datos.
Ajustes de la recogida
Los mismos parámetros que la aplicación ofrece para cada fuente antes de empezar una medición. Los rangos y la estimación de datos coinciden con la implementación; un cambio aparece enseguida en el diagrama de arriba.
Rango 10–1000 ms
Rango 100–60000 ms
Rango 5–300 s
Rango 5–60 s
Rango 5–300 s
Mapeo de internetRed para la medición continua
Con ambas seleccionadas, funcionan a la vez dos identificadores Network de Android separados.
Rango 500–5000 ms
Rango 1–1024 KiB
Rango 1–256 KiB
Rango 10–300 s
Rango 64–10240 KiB
Rango 8–2048 KiB
La estimación es una cota superior: en un enlace lento una muestra tarda más, así que caben menos en el mismo tiempo y se transfieren menos datos. Esto no es una medición de la velocidad máxima — por qué.