Sensor Play - the iPhone Sensor Playground, and the best app for serious scientific research and data recording.

Used by engineers, scientists, and teachers around the world.

The sensors built into all iPhones are amazing examples of the power in your pocket. To have a GPS receiver, an accelerometer, a gyroscope, even a Barometer with you at all times is a marvel of miniature engineering. It's simply fun to see the output from all these sensors, play with each interactively, or just view the raw data.

Record Accelerometer, Gyroscope, GPS, Barometer, Magnetometer sensor data and share by email for further analysis, or review using the in app viewer.

However Sensor Play is not just a toy.

Beyond the obvious fun of watching the accelerometer and gyroscope graphs bounce around you can now record multi-sensor data all at the same time, even in the background, for a full external analysis of your, or your iPhone's, motion through time and space however you so desire.

And now with Automation you can trigger your recordings either after a simple delay, or when you enter or leave a preset GPS Region.
Then end your recordings either after set duration, or when you enter or leave a preset GPS Region.

Automation makes getting the data you want so much easier, and eliminates lots of unnecessary recorded data. Set up the triggers as required, close the phone and go.
Set and Forget! Later when you open SensorPlay the data you were after will have been automatically recorded and saved for you.

The following data is recorded to a csv file for sharing through the standard iPhone share sheet.
Accelerometer: X, Y, Z
Gyroscope: X, Y, Z
Attitude: Roll, Pitch, Yaw
Location: Longitude, Latitude, Speed, TrueHeading, Altitude
Motion Activity: Type & Confidence
Barometer: Pressure, Relative Altitude
Magnetometer: µT X, Y, Z

Background mode is supported for all recordings, accelerometer, gyro, and multi-sensor export, lock your screen and keep recording all sensor data for up to six hours.

A serious engineering, scientific, and educational analysis tool.

Sharing of all recordings is now through the built in share options which includes, Airdrop, mail, message, notes, dropbox (if installed), etc.

Sensors currently supported:

Barometer (iPhone 6 and 6+ only)
- see the atmospheric pressure in a choice of 7 units, see your relative altitude plotted over time.
- Widget available to display the atmospheric pressure in the notification centre.
- See the g-forces on the X,Y,Z axis and see them traced over time.
- Widget available to show gMax in X,Y,Z axis on notification screen.
- Record the data and share for further analysis
- Watch the rate of rotation over the X,Y,Z axis plotted over time.
- Record the data and share for further analysis
GPS/Location Services
- See your exact location mapped on screen and share your Lat/Long coordinates by text or email.
- See the magnetic field acting on the X, Y, Z, axis along with an interactive compass.
3D/Force Touch (6S & 6S+ only)

Note: Continued use of GPS running in the background can dramatically decrease battery life.

What's New

Version 4.2

Bugfix: Recorded Data menu option was not responding on larger screens.

Customer Reviews

Awesome support!!


Phil was INCREDIBLY responsive to an issue regarding compatibility between Sensor Play, iPhone 7 and versions of iOS11. Ultimately we got the issue straightened out and I can continue playing around with the very cool tool he built. There are incredible possibilities with Sensor Play and exploring is most of the fun!!

Well worth the $5.


Graphs are awesome, data recording feature is invaluable and records data as .csv file.

Very nice


For my iPhone 6+ I wanted to see what barometer apps were available, to try out the new barometer sensor. So I downloaded a few free apps and tried them out. While looking for such apps there was Sensor Play for 99 cents. Hmmm ... it can show a graph for EACH sensor on the phone, graphing the raw data from the sensor in real time as you move the phone around. The labeled, rapidly changing sensor numbers are shown at top with the developing graph shown below.

Also, try out the GPS and select Hybrid to get an aerial view of your current location, and then zoom in. In my case, inside in my house, I then walk around and see my position change as I walk to the different rooms, along with changes in some of the other sensor data that it shows.

Overall, if you want to get an understanding of the various sensors on your iPhone, this app has a clean and simple interface and a clear presentation of the sensor data along with a real-time graph of the changing data.


Philip Broder
22.3 MB
Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2014 Philip Broder


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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