Why don't my aligner reminders go off?

Wearlo schedules put-back reminders as exact alarms. If one still doesn't ring, check that notifications are allowed, that "Alarms & reminders" is allowed, and that battery optimization isn't restricting the app. Reminders are rescheduled after a restart.

Does the day reset at midnight?

By default, yes, but you can change "My day starts at" in Settings. If you work nights or sleep late, set it to 6 AM, for example, so overnight wear counts as one day.

I forgot to tap. Can I fix it?

Yes. Use "Forgot to tap?" and pick roughly when, like "10 min ago". In History, tap any day to edit, add or delete out times.

Is the widget locked?

No. The widget, the out-timer, reminders and history are all included. The app is supported by a small banner and a few ads between screens.

Can I use it for retainers or a night-only plan?

Yes. Set a night plan of 10–12 hours as your daily goal. It works with any clear aligner or retainer schedule.

Will I lose my data on a new phone?

Not if you back up. Export a backup file in Settings and restore it on the new phone. There is no account; records stay on your phone.

Does it remind me to switch trays?

Yes. Set days per tray and Wearlo reminds you on switch day. Start the next tray in one tap.

Can I show my wear time to my orthodontist?

Share a weekly summary as text. 7- and 30-day average wear times are in History.

My reminder never rings when the screen is off.

Battery optimization is usually stopping the app. Set its battery usage to Unrestricted.

Reminders show up several minutes late.

Without the "Alarms & reminders" permission, Android batches notifications and delivers them late. Allow it.

Can I snooze the reminder?

Yes. Tap the 5-minute snooze in Wearlo's reminder and it rings again in 5 minutes.

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Aligner reminder not working? What to check

The most common reason an aligner reminder doesn't go off is Android's battery saving. While the screen is off, it delays or blocks scheduled work from apps, so the reminder arrives late or not at all.

Common causes

Any one of these is enough to make a reminder silently disappear.

Cause	Symptom	Where to check
Notifications off	No reminder at all	Settings → Apps → Notifications
Alarms & reminders off	Reminder arrives late	Settings → Apps → Alarms & reminders
Battery optimization	Nothing while the screen is off	Settings → Battery → set the app to Unrestricted
Silent channel	Shows up with no sound or vibration	The app's notification channel sound
Phone restart	Reminders gone after reboot	Whether the app reschedules after restart

Fix it on Android, in this order

Settings → Apps → (your timer app) → Notifications: turn them on and enable sound for the put-back channel
On the same screen, allow "Alarms & reminders"
Battery → App battery usage → Unrestricted (on Samsung, add it to "Never sleeping apps")
Allow the app through Do Not Disturb
Take your trays out and test with a 15-minute reminder

How Wearlo's put-back reminder works

Wearlo schedules the put-back reminder as an exact alarm. Pick 15, 30, 45 or 60 minutes after you take them out, and snooze for 5 minutes when it rings.

While your trays are out, an "out for 12:34" notification stays in the status bar, and reminders are rescheduled after a phone restart.

FAQ

My reminder never rings when the screen is off.: Battery optimization is usually stopping the app. Set its battery usage to Unrestricted.
Reminders show up several minutes late.: Without the "Alarms & reminders" permission, Android batches notifications and delivers them late. Allow it.
Can I snooze the reminder?: Yes. Tap the 5-minute snooze in Wearlo's reminder and it rings again in 5 minutes.

Get a reminder that rings on time

Get Wearlo on Google Play