5.9K reviews
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About this app

Did you know that you are carrying a 3D magnetometer? That you can use your phone as a pendulum to measure earth's local gravitational acceleration? That you can turn your phone into a sonar?

phyphox gives you access to the sensors of your phone either directly or through ready-to-play experiments which analyze your data and let you export raw data along with the results for further analysis. You can even define your own experiments on phyphox.org and share them with colleagues, students and friends.

Selected Features:
- A selection of pre-defined experiments. Just press play to start.
- Export your data to a range of widely used formats
- Remote-control your experiment through a web interface from any PC on the same network as your phone. No need to install anything on those PCs - all you need is a modern web browser.
- Define your own experiments by selecting sensor inputs, defining analysis steps and creating views as an interface using our web-editor (http://phyphox.org/editor). The analysis can consists of just adding two values or using advanced methods like Fourier transforms and crosscorrelation. We offer a whole toolbox of analysis functions.

Sensors supported:
- Accelerometer
- Magnetometer
- Gyroscope
- Light intensity
- Pressure
- Microphone
- Proximity
*some sensors are not present on every phone.

Export formats
- CSV (Comma separated values)
- CSV (Tab-separated values)
- Excel
(if you need other formats, please let us know)

This app has been developed at the 2nd Institute of Physics A at the RWTH Aachen University.


Explanation for the permissions requested

If you have Android 6.0 or newer, some permissions will only be asked for when needed.

Internet: This grants phyphox network access, which is required to load experiments from online resources or when using the remote access. Both are only done when requested by the user and no other data is transmitted.
Bluetooth: Used to access external sensors.
Read external storage: This is may be necessary when opening an experiment stored on the device.
Record audio: Required to use the microphone in experiments.
Location: Used to access GPS for location-based experiments.
Camera: Used to scan QR codes for external experiment configurations.
Updated on
Sep 5, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

5.69K reviews
A Google user
October 3, 2018
It is hard to believe that such a valuable, versatile, and well-organized app exists, never mind for free and without ads or other bloat. If I could suggest one improvement: I was very surprised that you can't view the spectra you've taken over time as "carpet"-style spectrograms. I'd really like to see that functionality.
124 people found this review helpful
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RWTH Aachen University
October 4, 2018
Thanks for the positive review. This "carpet" plot will be available in version 1.1.0 soon. If you want to, you can try the beta at http://phyphox.org/download (below the links for the regular version).
Lindsay Flint
June 15, 2020
I was using phyphox to record some barometric pressure data over several days on an old phone. The first time I did it, everything seemed to work, though the export process isn't straightforward. The second time I tried it, I couldn't export the data I needed before the app let me exit the experiment without prompting me to save any of my data and then crashed. I have no idea if the data is recorded anywhere or if it's even recoverable.
125 people found this review helpful
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RWTH Aachen University
June 17, 2020
We expected that the export option in the “⋮”-menu would be more easily found, however, we are open for improvements/suggestions. The app does not store data permanently, so a crash unfortunately means loss of the data. We will change that you could exit an experiment without being asked if data should be stored.
Bomber Bot The Second
February 27, 2021
This app was used for experiments in university. The engineering students had to measure the speed of sound using the app's ability to measure the time it takes to bounce sound waves. The problem is there is no control on how the app records the sound, what the graph means and what can be interpreted, and it doesn't properly control phones with dual mics and speakers leading to inaccuracies and issues with measurements. This app is poorly designed for real world applications.
82 people found this review helpful
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RWTH Aachen University
October 10, 2021
Have you checked “⋮” in “Sonar” that should provide some info, links to our wiki and a YouTube video with details? Practicals for speed of sound are typically based on the acoustic stopwatch, see https://www.youtube.com/watch?v=uoUm34CnHdE Unfortunately, apps are limited in their control of system audio handling, not much we could improve here. :/

What's new

- Depth sensor (LiDAR / ToF) experiment available in tools section.
- New settings menu.
- Option to turn off screen if proximity sensor is triggered.
- Option to override system language settings.
- Option to change the remote access port.
- Improved method to determine significant digits on plot axes.
Many minor improvements and bugfixes. See https://phyphox.org/wiki/index.php/Version_history#1.1.11 for full changelog.