UPDATE: Good app, not stable
A few days after I submitted my previous review (below), I received an email from the developer to address the tech issue. The app is working again. As long as the app works, I really like the app. Its GUI is tasteful and it offers just enough features including syncing and multiple schedules. So I raised my evaluation from 3 stars to 4 stars. Except for the stability issue, I would give it a 5 star. I really like the concept of the app, but since I started using it a few months ago, I have experienced a few fatal errors. Schedule not synced across devices, schedule being lost (was able to recover, tho), and now I can't creat any new schedules. When I first experienced one of these fatal errors, an update came out a few days later. But now I don't see any updates despite that I can no longer create any schedule events. I guess the best advice is not to do any long-term subscriptions. Really great concept but not stable and not very practically usable at this stage :(