Calerto for Mac

Calerto turns your calendar into alarms you can't sleep through. Full-screen meeting alerts — not another notification you'll swipe away — with custom prep time per meeting, Apple + Google Calendar sync, a menu bar countdown to what's next, and automatic launch at login (toggle it off anytime). Pause alarms without losing them. Pro auto-alarms your whole week. Your calendar data never leaves your device. Never be late again.