Love it but has bugs

I love this app, its simple and keeps reminding me until I mark a task done. There are only two things that drive me crazy but theyre so bad it brings it down to 3 (otherwise a big 5!) stars. The sync between my iPhone and iPad is nonexistent. I have to mark something complete on BOTH devices or hit snooze on BOTH devices. And the missing Apple receipt? Really? I have to "refresh" my receipt almost once a week. These two problems are about to result in me finding a new app.

Kgcalif about Due - Reminders & Timers