Neither app, which basically gives you the ability to schedule when you hear alerts (i.e. so you can sleep and not hear an email alert sound at 3am, but still let phone calls ring through) does not work on my Prime. I used Timeriffic on my Droid X without an issue. No go on my Prime. Tried Sound Manager app too, which is supposed to be similar, but it also did not work. Both install just fine, but neither silences the notifications schedules I set up. Anyone else seeing the same issue?