Time tools
Timer Did Not Alert? Notification Troubleshooting
Check permissions, battery policy, focus modes, and sound settings in a decisive order.
First confirm that the app created a pending system reminder. Then check notification permission, sound, Do Not Disturb, and battery background limits. On iOS inspect Focus and Scheduled Summary; on Android 13+ allow notifications and check vendor background controls; on HarmonyOS allow notification and reminder permissions. Test with a reminder two minutes ahead while locked.
Time tools
- Inspect pending reminders in the app and confirm that the system task exists.
- Allow notifications, time-sensitive delivery, and sound; then inspect Focus or DND.
- Check battery saving, background activity, scheduled summaries, and vendor autostart policy.
- Create a reminder two minutes ahead, lock the screen, and record visual and sound delivery separately.
Start inside the app with its pending-reminder list, then move outward to permissions, system policy, and sound. An empty pending list points to creation or sync; an existing reminder that never appears usually points to operating-system policy.
Frequently asked questions
Will a web countdown alert after I close the page?
It is not guaranteed. Browsers suspend background pages and closing a tab stops its code; use the native app.
Why did a notification appear silently?
Check hardware mute, Focus or DND, category sound settings, and the sound selected inside the app.