Features built to help you show up on time
OnTimer is built around one job: making calendar events harder to miss.
Connect the calendars you actually use
OnTimer works with your existing calendar setup so you do not have to rebuild your schedule somewhere else. Connect Google and Microsoft calendars, including multiple accounts, and OnTimer uses those events to prepare alarms.
- ✓Works with Google and Microsoft calendars
- ✓Supports multiple calendar accounts
- ✓Uses your existing event schedule
- ✓No need to create separate reminders by hand
Prepare alarms automatically
Once OnTimer is connected, upcoming meetings, calls, and appointments can be turned into alarms automatically based on your settings.
- ✓Alarms created from calendar events
- ✓Adjustable lead times
- ✓Updates when your schedule changes
- ✓Less manual reminder setup
Get alerts that are harder to ignore
Standard calendar reminders are easy to miss. OnTimer is designed to create a louder, more persistent signal when it is time to pay attention.
- ✓Loud, visible alerts
- ✓Persistent alarm behavior
- ✓Event details included in the alert
- ✓Better for high-consequence meetings and appointments
Choose what should trigger alarms
Different schedules need different rules. OnTimer gives you control over timing and calendar behavior without making setup complicated.
- ✓Choose alarm lead times
- ✓Control which calendars matter
- ✓Use business-hours filtering
- ✓Handle recurring events more cleanly
Know when it is time to head out
For calendar events with a location, Time To Leave can alert you when it is time to leave based on travel time and traffic. This is a paid feature.
- ✓Uses event location data
- ✓Factors in travel time and traffic
- ✓Useful for appointments and in-person meetings
- ✓Premium feature
Free Tools
Airport Time-to-Leave Calculator
Estimate exactly when to leave for the airport based on traffic, security time, bags, and how you're getting there. Free, no account required.
Try the calculator →Ready to stop missing meetings?
Download OnTimer for free and get more reliable alerts from your calendar.