What's My Sensor?
by Erik Tobias Rinde Tharaldsen
· Utilities
· Free
On the App Store since October 2026
· Data updated
What's My Sensor? is made and published by Erik Tobias Rinde Tharaldsen. AppBrain is an independent app data site and isn't affiliated with Erik Tobias Rinde Tharaldsen. The app name, icon, screenshots and description belong to Erik Tobias Rinde Tharaldsen and are shown as published on the App Store.
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- Last updated
- October 3, 2026
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Releases
Updates seen on the App Store- Version
- 3.1
- Launched
- October 2026
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 30.5 MB
- Content rating
- Everyone
Technologies used by What's My Sensor?
About the app and developer
About What's My Sensor?
What's My Sensor? is an utilities app developed by Erik Tobias Rinde Tharaldsen.
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App Information
What's My Sensor? is freely available from the App Store. The app size is 30.47 MB. The latest version available is 3.1. The last update was on October 3, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2026.
Developer information for Erik Tobias Rinde Tharaldsen
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Store listing
By Erik Tobias Rinde Tharaldsen, from the App Store
Screenshots by Erik Tobias Rinde Tharaldsen, from the the App Store listing
Description by Erik Tobias Rinde Tharaldsen Written by the developer, not by AppBrain. Click to read.
Your phone is full of sensors. What's My Sensor? shows you all of them.
It lists every sensor the hardware reports, tells you what each one is for in one plain sentence, graphs what it is reading as you move the phone, and puts the motion sensors to work as a spirit level and a compass.
WHAT YOU SEE
Every sensor on the device, grouped into motion, position, environment, body and other. Tap one for its live reading, a graph of the last few seconds with one line per axis, the lowest and highest value it has reached, an explanation of what it measures, and the specification the phone reports for it: maximum range, resolution, power use and how fast it can update. Pause the graph to read a peak off it, or reset it to measure again.
SPIRIT LEVEL
Lay the phone on a shelf or a table and a bubble shows which way it slopes, in tenths of a degree. Stand it on an edge and it becomes a straight edge for a picture frame or a door. It switches between the two by itself. Set as level takes any surface as your zero, which also takes out the tilt of a camera bump.
COMPASS
A magnetic compass steered by the phone's own sensor fusion, the same source the system compass uses. It reads where the top of the phone points when it lies flat and where the back points when you hold it up, with a dial that turns so north stays north and a nudge when the magnetometer needs calibrating. It points to magnetic north, because true north would need your location, and this app does not ask for it.
Readings are labelled and carry their units, so 9.81 m/s² on the Z axis means something rather than being a bare number.
NOTHING IS HIDDEN
Sensors that have not fired yet still appear, with a note that they are waiting. That matters for sensors like the step detector and significant motion, which only report when something happens. Other sensor apps make them look like missing hardware. Sensors the phone cannot read are gathered at the bottom of the list, still there to open and explain.
WHAT IPHONE CAN AND CANNOT SHOW
iOS gives apps the accelerometer, gyroscope, magnetometer, gravity, user acceleration, device attitude and the proximity sensor. It has no public way to read the light sensor, the thermometer or the humidity sensor, and the barometer and step counter sit behind the Motion and Fitness permission, which this app does not ask for. Those sensors are still listed and still explained, gathered at the bottom with a note that they cannot be read here. Knowing what your phone has is worth something even when the reading is out of reach.
WHAT IT DOES NOT DO
No permissions. No internet access. No analytics, no ads, no accounts, no data collection of any kind. The app reads sensors and draws numbers on the screen. That is the whole app.
GOOD FOR
Checking a phone before you buy it second hand. Hanging a picture straight. Finding north on a walk. Working out why auto brightness or the compass misbehaves. Catching the peak of a knock or a shake. Seeing whether a repair fixed a proximity sensor. Teaching someone what a gyroscope actually does. Developers checking what a device really reports.
Light and dark, with a palette designed for it.
It lists every sensor the hardware reports, tells you what each one is for in one plain sentence, graphs what it is reading as you move the phone, and puts the motion sensors to work as a spirit level and a compass.
WHAT YOU SEE
Every sensor on the device, grouped into motion, position, environment, body and other. Tap one for its live reading, a graph of the last few seconds with one line per axis, the lowest and highest value it has reached, an explanation of what it measures, and the specification the phone reports for it: maximum range, resolution, power use and how fast it can update. Pause the graph to read a peak off it, or reset it to measure again.
SPIRIT LEVEL
Lay the phone on a shelf or a table and a bubble shows which way it slopes, in tenths of a degree. Stand it on an edge and it becomes a straight edge for a picture frame or a door. It switches between the two by itself. Set as level takes any surface as your zero, which also takes out the tilt of a camera bump.
COMPASS
A magnetic compass steered by the phone's own sensor fusion, the same source the system compass uses. It reads where the top of the phone points when it lies flat and where the back points when you hold it up, with a dial that turns so north stays north and a nudge when the magnetometer needs calibrating. It points to magnetic north, because true north would need your location, and this app does not ask for it.
Readings are labelled and carry their units, so 9.81 m/s² on the Z axis means something rather than being a bare number.
NOTHING IS HIDDEN
Sensors that have not fired yet still appear, with a note that they are waiting. That matters for sensors like the step detector and significant motion, which only report when something happens. Other sensor apps make them look like missing hardware. Sensors the phone cannot read are gathered at the bottom of the list, still there to open and explain.
WHAT IPHONE CAN AND CANNOT SHOW
iOS gives apps the accelerometer, gyroscope, magnetometer, gravity, user acceleration, device attitude and the proximity sensor. It has no public way to read the light sensor, the thermometer or the humidity sensor, and the barometer and step counter sit behind the Motion and Fitness permission, which this app does not ask for. Those sensors are still listed and still explained, gathered at the bottom with a note that they cannot be read here. Knowing what your phone has is worth something even when the reading is out of reach.
WHAT IT DOES NOT DO
No permissions. No internet access. No analytics, no ads, no accounts, no data collection of any kind. The app reads sensors and draws numbers on the screen. That is the whole app.
GOOD FOR
Checking a phone before you buy it second hand. Hanging a picture straight. Finding north on a walk. Working out why auto brightness or the compass misbehaves. Catching the peak of a knock or a shake. Seeing whether a repair fixed a proximity sensor. Teaching someone what a gyroscope actually does. Developers checking what a device really reports.
Light and dark, with a palette designed for it.