Hello,
I am now testing all of three apps and have problems and suggestions that follow:
AMS:
- App locking feature isn't working. I set my own password (using avast PIN) and try locking recommended to lock apps (Google Play, Settings) and even some other apps but it doesn't show the locking password.
- Uninstall protection hasn't been working. I have contacted with Filip before and waiting for his solution.

- The main interface seems difficult to see other features (which is available when slide to the right) and may make users wonder whether these features are still available. So I suggest adding a direct "user guide" in the first time of use about the "slide bar".
Backup:
- I had a problem related to signing in to Google Account (after tapped on "OK" in the permission dialog, it said "Connecting..." then returned to the permission dialog again). This problem is fixed now.
- I don't know if there is a "refresh" in case the back up process interrupted (maybe due to connection problem). If not, I suggest adding it.