They get buried under other alerts, dismissed accidentally, or simply aren’t loud enough to pull you out of what you're doing. I've missed meetings because of it.
So I built OnTimer, an iPhone app that turns calendar events into persistent alerts that are hard to ignore.
It connects to Google Calendar and Microsoft 365 and can also generate Time-to-Leave alerts based on travel time and traffic for events with a location.
Curious if others have run into this problem or have ideas for improving it.