Updated
For most people, the best alarm app for Android is the one already on the phone. Google's Clock app handles repeating alarms, snooze, music alarms, and a bedtime schedule. A third party alarm app is worth installing when you want a wake up mission, detailed sleep tracking, or a call that talks to you. Whichever you pick, check your battery settings, since they can hold an alarm app back overnight.
| App | Best for | Wake up tools | Sleep tools |
|---|---|---|---|
| Google Clock | Simple daily alarms | Snooze, music alarms, Assistant routines | Bedtime schedule, sleep sounds |
| Alarmy | People who want a task to stop the alarm | Photo, barcode, math, typing, shake and squat missions | Sleep tracker, snoring recording |
| Sleep as Android | People who want detailed sleep data | Smart wake up, CAPTCHA tasks, snooze limit, sunrise alarm | Sleep cycle tracking, wearable support |
| Snora | People who want a call that talks to them | 5 wake missions, gentle wake, AI call with Snora Plus | Sleep tracking, 14 sleep sounds |
When Google Clock is enough
Google Clock is enough if you wake reliably to a normal alarm and mostly need it to ring at the same time on certain days.
According to Google's help pages, you can name an alarm, repeat it on chosen days, turn vibration on or off, and pause a recurring alarm for specific dates on a calendar. By default, snooze delays the alarm by 10 minutes, and you can change that length in the Clock settings. You can wake to a song from YouTube Music, Pandora, Spotify, or Calm (Spotify needs a premium account to pick a song), and you can attach a Google Assistant routine that runs when the alarm goes off.
The Play listing adds timers, a stopwatch, World Clock, a bedtime schedule with sleep sounds, and alarms on a paired Wear OS watch. If your phone came with its own maker's clock app, the same test applies. If it wakes you every morning and you rarely snooze past it, there is no strong reason to add another app.
When a third party alarm app helps
A third party alarm app helps when the problem is not the alarm ringing but you getting up.
Each type solves a different morning:
- Wake up missions. If you turn the alarm off without really waking, a mission asks you to do something first. Alarmy's listing describes photo and barcode missions, math and memory puzzles, typing quotes, and shake or squat missions, plus a Wake Up Check that restarts missions if you ignore the alarm.
- Sleep data. If you want to see your nights in detail, Sleep as Android describes sleep cycle tracking, sonar tracking without the phone in bed, and support for watches such as Pixel Watch, Galaxy, and Garmin. Its alarm side includes a smart wake up, CAPTCHA tasks, a snooze limit, and a sunrise alarm.
- A voice on the line. If a ringtone fades into the background for you, an alarm that calls and talks with you is a different kind of signal. That is the gap Snora fills, covered below.
People who sleep through loud alarms can find more options in our guide to alarm apps for heavy sleepers.
Battery settings that can stop an alarm app
Android saves power by limiting what apps do in the background, and those limits can delay or stop an alarm app that is not set up correctly.
Here is what Android's own developer documentation says. When the phone sits idle in Doze, standard alarms are deferred to the next maintenance window. Alarms an app schedules as an alarm clock keep firing, and the system leaves Doze shortly before they ring. That is why a well built alarm app usually rings on time, and why your phone's settings still matter.
Three settings are worth checking:
- App battery usage. On a Pixel, open Settings, Apps, See all apps, pick the alarm app, then App battery usage and Allow background usage. Google describes Unrestricted as removing limits on background battery use and recommends Optimized for most apps. Google also notes that turning off optimization lets an app run more and can use more battery, so make this change only for the alarm app you rely on. Some of these steps need Android 14 or later.
- Sleeping apps on Samsung. Samsung puts unused apps to sleep automatically. Go to Settings, Battery and device care, Battery, Background usage limits. Samsung says apps under Deep sleeping apps will never run in the background, so make sure your alarm app is not there, and add it to Never sleeping apps. On newer models the path can start at Settings, Battery.
- Alarms and reminders. Apps that target Android 12 or later need an Alarms and reminders permission to set exact alarms. Google's documentation says this permission is not granted automatically to fresh installs of apps targeting Android 13 or later, and both you and the system can revoke it. If your alarm app asks for it, allow it.
Even the built in Clock is not exempt. Google's Clock help says Battery Saver may block alarms and suggests turning it off or adding Clock as an essential app. It also says an alarm volume under 30% may be too quiet to wake you.
These settings rarely show a warning the night before. If your alarm has already failed once, our step by step guide to an Android alarm that is not working walks through the fixes.
Where Snora fits
Snora is an alarm app for Android and iPhone built around an alarm that calls you and the checks that help it ring.
The alarm is free: unlimited alarms, all 51 alarm sounds, all 5 wake missions, gentle wake and snooze, sleep tracking, reports up to 90 days, and all 14 sleep sounds. The missions are long press, math, number tap, pattern echo, and shake. Sleep tracking estimates your night from phone motion. It is not a medical device.
With Snora Plus, an optional upgrade you buy in the app, an AI calls you at alarm time and talks with you briefly. You choose how each call ends: a regular alarm with no call, chat after the alarm, the call as the alarm (tap to end), or confirm you're up (say you're up or hold the button on screen). Emergency stop is always on the ringing screen: press and hold for 3 seconds. A regular alarm is set first, so if the conversation fails, the alarm still rings. On Android, answering by voice needs Android 13 or later and the phone's offline speech model for that language. Until it is ready, you end the call by holding a button on screen.
For Android in particular, Snora reads the settings it can see, such as notification permission, battery optimization, and exact alarm permission. If one of them would stop your alarm, you see it along with a way to fix it. No app can guarantee an alarm rings, since your device, its power settings, and its volume all have a say, so keep a second alarm for anything critical.
How to choose
Pick the simplest app that matches the way you actually fail to wake up.
- You wake to any alarm. Stay with Google Clock or your phone maker's clock.
- You switch the alarm off half asleep. Choose an app with wake up missions, such as Alarmy or Snora.
- You want to study your sleep. Look at sleep tracking depth and wearable support, where Sleep as Android stands out.
- A ringtone no longer gets your attention. Try an alarm that calls and talks with you, like Snora.
- Whatever you choose, test it. Set an alarm two minutes ahead with the screen off, check its battery usage setting, and repeat after each system update.
If you also use an iPhone, our guide to the best alarm app for iPhone covers the same questions there.
You can try Snora on the App Store or Google Play.
FAQ
What is the best alarm app for Android?
For simple daily alarms, Google's Clock app is enough for most people. If you need help getting out of bed, pick an app built for that: Alarmy for missions, Sleep as Android for sleep data and a smart wake up, or Snora for an alarm that calls and talks with you.
Is Google Clock good enough as an alarm?
Yes, for most people. It supports repeating alarms, adjustable snooze, music alarms, Assistant routines, a bedtime schedule, and Wear OS watches. Battery Saver and a low alarm volume can still affect it, so Google suggests adding Clock as an essential app in Battery Saver and notes that an alarm volume under 30% may be too quiet.
Why does my alarm app not go off on Android?
The most common cause is battery management putting the app to sleep or limiting it in the background. Set the app's battery usage to Unrestricted on a Pixel, or add it to Never sleeping apps on Samsung, and allow the Alarms and reminders permission. Then check the alarm volume.
Should I turn off battery optimization for my alarm app?
For the one alarm app you rely on, it is a reasonable choice. Google recommends Optimized for most apps and notes that removing limits can use more battery, so change it only for the alarm app rather than every app on your phone.