phyphox

I have iphone SE, original. The apps camera functions don’t work. Get a quick blip of camera view then nothing, it freezes. Updated app to try this. And sonar has never made sense. Just blobs across the screen. Clearly not random but doesn’t make any sense. Do I hold phone away, point flat, hold upright turn around, bottom, top, etc. would be nice to know what I need to do. What is it showing me? It would be nice if after starting the “experiment “ the graph had the option to scroll with the data on a fixed time window, not keep compressing the data.

This is hands down best iOS app to get sensor data. I am using it for the accelerometer and even does the FFT and generates the spectra for you. At least up until now it is free with and ads free. I wish this was available back when I was in high school or even college. Teachers and U. professors should make use of this app and the ecosystem these guys/gals are creating.