Does anyone know of a good sleep tracking app for Android that is 1) free and 2) doesn't collect all of your data and store it on the cloud? All I want is something that uses accelerometer data to monitor movement, gives a nice graph of that data every morning, and won't end up on a server farm somewhere, and that is a surprisingly difficult thing to find. Honestly just about ready to code it up myself and release an APK on GitHub lol
