Roundup
Reminder apps on Android, and what Android lets them do
On Android the app is not usually the reason a reminder fails. The battery optimiser is. Before you choose anything, it is worth knowing what the platform allows and what it quietly switches off.
What Android lets the best reminder apps do
Android has historically given apps more room than other platforms to interrupt you. An app can raise a full-screen alert that takes over the display rather than sitting in a shade, it can play an alarm that behaves like an alarm rather than a notification sound, and it can schedule work that survives a reboot. That is why alarm clocks, call screens and reminder apps feel more capable here.
It also means the difference between two reminder apps on Android is often not what they can do but whether they bothered. An app that raises a full-screen alert and one that posts a banner are using the same platform and producing very different outcomes at 6pm.
The catch is on the other side. Manufacturers layer aggressive battery management on top of Android, and the most common reason a reminder never arrives is that the phone decided the app should not be running. That is not the app's fault and it is not yours, but it is fixable, and it is the first thing to check whichever app you pick.
What to check on any Android reminder app
Six settings that decide whether a reminder arrives, regardless of which app you choose.
Full-screen alerts
Does it take over the screen, or post a banner you can clear without reading? On Android this is a choice the app makes, not a platform limit.
Battery optimisation
Exempt the app, and check again after a system update. This is the single most common cause of a reminder that silently never fires.
Exact alarm permission
Newer Android versions gate scheduling to the minute behind a permission. If it is off, a 6pm reminder may arrive at some point after 6pm.
Background location
Place reminders need location permission set to allow all the time, not only while using the app. Expect a real battery cost from any geofence.
Do Not Disturb behaviour
Check what your handset does to alarms and calls in Do Not Disturb, and test it rather than assuming. Manufacturers differ.
Survival across a reboot
Restart the phone and confirm a scheduled reminder still fires. An app that reschedules on boot behaves very differently from one that does not.
The kinds of app, and who each one suits
The tools already on the phone. Google's own reminder and task surfaces are free, signed in, and reachable by voice. For most people with low-stakes reminders this is the right answer, and no roundup should talk you out of something that is working.
Quick capture apps. Google Keep and its relatives are built for speed: open, type, done. They suit people whose failure is that the thought never got written down at all, and who reopen the app often enough for the recall to happen naturally.
Task managers. Todoist, TickTick, Microsoft To Do and Remember The Milk all run well on Android and are built for volume — projects, tags, saved searches, and a view that tells you what today should look like. They suit people carrying a lot of commitments rather than a few critical moments.
Alarm and wake-up apps. Alarmy and the category around it use Android's full-screen alarm capability hard, because waking a sleeping person is their entire job. If your problem is the morning, this is the family to look at.
Delivery-first reminder apps. Timelee is one. The premise is that a reminder is a delivery rather than a record, so you choose per reminder whether it arrives as a full-screen alarm, a ringing call inside the app, or a real phone call placed by Timelee's servers to a number you verified. That last channel does not depend on Android at all, which is precisely why it survives a battery optimiser.
What Timelee does on Android, iPhone and the web
| Feature | Android | iOS | Web |
|---|---|---|---|
| Full-screen alarm and in-app call | Yes | Yes | No |
| Real phone call to a verified number | Yes | Yes | Yes |
| Place reminders on arrive or leave | Yes | Yes | No |
| Picture and voice capture | Yes | Yes | Partial |
| Creating and editing every reminder kind | Yes | Yes | Yes |
| Browser or desktop notifications for reminders | No | No | No |
Android is where Timelee has the most room to work. The web dashboard has real forms for almost every reminder kind — set it up on a laptop, it rings on your phone.
The ten-minute Android setup that fixes most failures
- Exempt the reminder app from battery optimisation, and recheck after every system update
- Grant exact alarm permission if your Android version asks for it
- Set a reminder two minutes ahead and watch what it actually does on the lock screen
- Repeat that test with the phone on silent and again in Do Not Disturb
- Restart the phone, then confirm a reminder scheduled before the restart still fires
- For place reminders, set location to allow all the time and accept the battery cost
About the descriptions on this page
Android behaviour varies by version and by manufacturer, and every app named here changes often. Nothing on this page quotes a vendor's price, feature list or limits, and none of it is a ranking. Check the vendor's own site, and test on your own handset, before you decide.
Common questions
Why do my reminders arrive late on Android?
Usually battery management. Manufacturers restrict what apps may run in the background, and a restricted app cannot fire on time. Exempt the app from battery optimisation, grant exact alarm permission if your version asks for it, and test again after any system update.
Will a reminder ring through Do Not Disturb?
An alarm generally behaves like an alarm rather than a notification, and a real phone call arrives on the phone network. Exactly how your handset handles both in Do Not Disturb depends on your own settings, so test it once rather than trusting any app's description.
Does Timelee work on Android and iPhone together?
Yes. One account covers Android, iPhone and the web, and a reminder created on any of them appears on the others. That is often the reason a mixed household looks past a platform app.
What does Timelee do that Android alone cannot?
Place a call. The last delivery channel is a real phone call from Timelee's servers to a number you have verified with a one-time code. It arrives on the phone network rather than as a push, so it is unaffected by battery optimisers, by the app being closed, or by the phone being locked.
Is Timelee free on Android?
The core is free: reminders, alarms, repeats, pre-alarms, nags, categories, tags, sharing and the web dashboard, in 32 languages. Only real phone calls use credits, and those are bought inside the app on Google Play.
Fix the settings first, then choose the app
Ten minutes in Android's battery and alarm settings will do more than any switch. Then try one reminder on a channel that does not depend on them.