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OnTimer is a calendar reminder app designed to make sure you are never late for meetings, calls, or appointments. While standard calendar notifications are easy to miss or can fail due to silent mode, focus settings, or device limitations, OnTimer adds a reliable reminder layer that ensures you always know when it is time to act.
OnTimer connects to Google Calendar and Microsoft 365 to monitor your upcoming events and send persistent alerts shortly before meetings begin. These alerts are designed to stand out so you do not overlook them during busy workdays.
In addition to meeting reminders, OnTimer includes Time-to-Leave alerts for events that have a location. The app calculates when you should leave based on travel time and real-time traffic conditions, helping you arrive on time whether you are walking, driving, or commuting.
Instead of relying on a single fragile notification, OnTimer acts as a safety net for your schedule. Professionals use it as a backup reminder system to prevent missed meetings, late arrivals, and costly no-shows.
Key features include:
โข Persistent meeting reminders you canโt miss โข Calendar integration with Google Calendar and Microsoft 365 โข Time-to-Leave alerts based on travel time and traffic โข Customizable reminder timing โข Simple setup that works with your existing calendar
If you rely on your calendar to manage your day, OnTimer helps make sure you actually show up on time.
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