Never Be Late Again
OnTimer connects to your calendar and automatically sets alarms based on your events — so you always leave on time, without thinking about it.
Free download · iOS 16+ · No subscription required
5★
App Store Rating
iOS 16+
Compatible
Free
Download
0 Setup
Required
Built for people who hate being late
OnTimer removes every excuse. Your calendar knows where you need to be — OnTimer makes sure you get there.
Calendar Connected
Syncs with your iPhone calendar so it always knows what's next on your schedule.
Automatic Alarms
Sets smart alarms based on your events — no manual setup needed, ever.
Can't-Miss Alerts
Escalating alerts ensure you'll never sleep through an important commitment.
You're In Control
Customize lead times, snooze settings, and which events get alarms.
Calm, clear, on time
A beautiful interface designed to reduce stress, not add to it.
Works in 3 simple steps
Connect your calendar
OnTimer reads your upcoming events — meetings, appointments, anything with a time.
We set the alarms
Based on your schedule, OnTimer automatically creates alarms with your chosen lead time.
Relax. You're on time.
Your alarm goes off. You leave. You arrive on time. No stress, no scrambling.
Stop running late. Start today.
Download OnTimer for free and never miss another meeting, flight, or appointment.