One hour before my show yesterday, it suddenly failed to validate my license. And so there was a concert in shame..... great app, lousy support. There was no way to get the validation fixed, and no shortcuts to help out a stressed musician. So if you don't play concerts, go ahead and get the app. If you need the app, then don't get it. It won't work when you need it.....
Developer reply
We are very sorry about this. The 1.0.9 update was required so that license checking isn't performed at all in future. Existing users need to go into the Android Settings -> Stage Assistant and press the 'Clear Data' button. Note that this doesn't clear your songs/performances.