Your Magnus Trainer game scores are synced to our servers if you are logged in with email or Facebook. We do not store reading progress in theory lessons.
When you are not logged in, your progress is only stored locally on your device. Deleting the app will delete anything that is not stored on our servers.
If you have been using Magnus trainer without being logged in, we will unfortunately not be able to recover it for you.
Still have any issues with restoring your progress? Please contact us.