Sub-X 1.6: sync with Google

Install: download Sub-X.apk on your Android phone, open it and install it over your current Sub-X (your data stays). Android 7 or newer. If Play Protect warns about an unrecognised app, tap More details → Install anyway.

New in this release

• Sync with Google: in Timer → Backup, tap Sign in with Google. Your times, sessions, learning progress and trainer times then stay the same on your phone and on the website (sign in there with the same Google account). Solves you delete stay deleted everywhere. Your data is kept in a database only your account can read.
• This app version adds Google's own sign-in, which the website's sign-in page can't do inside an app.

Also new (through the website, so older app versions get these too): the Progress page in Learn, "You could have saved" after smart-cube solves, and sturdier smart-cube connecting.

As before, the app loads from https://bluex7710.github.io/sub-x/, so other updates arrive by themselves. Signed with a test key: meant for installing yourself, not the Play Store.