● 2019-10-15 EDIT: Just wanted to update my previous reviews to say that the problem I initially encountered seems to have gone away. I don't know exactly when, or how (maybe thanks to an automatic update of the app itself or Android), but TimeTune notifications now happen reliably and on time, just as you would expect, so I'm now upgrading my initial 4 stars to 5 stars—big thanks to the devs! ● 2018-11-05 EDIT: Already in touch with support and testing. After restarting my device it appears to be working, but I will need to test for a few days before I can confirm ● INITIAL REVIEW: App itself is great, but Android keeps closing it after a few minutes of inactivity. As a result, notifications don't happen. I've followed the troubleshooting steps which I was already familiar with and have worked for other apps. just not for TimeTune. I wish I could fix this, it's such a great app!