I’ve had a trial at using the rRuf app to capture road surface vibration data on both an Android and iOS devices.
I’ve noticed that when using it on Android and stationary in traffic or at traffic lights, the speed is not showing as zero. One time showing 5kmh, another 8.5kmh.
Also unable to get the camera to work on either device.
Just wondering if anyone else has tried this app and got it to work