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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.
290 people found this review helpful
RWTH Aachen University
04 October 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 F
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.
197 people found this review helpful
RWTH Aachen University
17 June 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
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.
130 people found this review helpful
RWTH Aachen University
10 October 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. :/