Wake up with light! This alarm can only be turned off when your room is bright
About this app
Stop Oversleeping with Lux Alarm
Tired of hitting snooze and waking up late? Lux Alarm ensures you actually get out of bed by requiring light to silence the alarm.
How it works
To stop the alarm, you must get up and open your blinds or turn on the light. The app uses your phone's sensor to detect brightness; by the time the alarm turns off, you are already on your feet and ready to start your day.
Key Features
• Smart Light Detection: Uses your phone's sensor to ensure the alarm only deactivates once your environment is bright. • Adjustable Sensitivity: Customize the required light level to account for gloomy weather or different room setups. • Modern Interface: A clean, intuitive design based on Material Design 3 for easy navigation. • Circadian Support: Waking up with light helps regulate your natural sleep cycle and reduces morning grogginess.
Licensed under GPL-3.0-or-later.
What's New in v2.2.3
Imported from the F-Droid repository index.
- - Added support for Android 17 (target SDK 37)
- - Updated dependencies
Version history
Jun 30, 2026 · 2.3 MB · Android API 28–37 · code 11
Imported from the F-Droid repository index.
- - Added support for Android 17 (target SDK 37)
- - Updated dependencies
SHA-256 3c3bb865928d27115ed49d4f569419de7c155e42e9206dac38d106d05e2a3225
May 30, 2026 · 2.3 MB · Android API 28–36 · code 10
Imported from the F-Droid repository index.
- - Improved alarm screen launch reliability on Android 14+
- - Reduced delay before alarm notification appears while the screen is on
- - Updated Android build tooling and dependencies
SHA-256 d1d63df44c8bcc0789cd6eef9a93f5a6105a685ce1119c99f51bef7fd088c772
Apr 28, 2026 · 2.2 MB · Android API 28–36 · code 9
Imported from the F-Droid repository index.
- - Lowered minimum required lux level from 10 to 1 to support very dim environments
- - Upgraded Gradle and Android Gradle Plugin
SHA-256 3499ca52805e551cbadde60bec909133823550412ee98fc781ac9c360c88a9f5
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.dsalmun.luxalarm is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.2.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Lux Alarm first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Lux Alarm, and a listing is removed when the evidence for it stops holding up.
Get Lux Alarm
Every source we list for com.dsalmun.luxalarm is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
3c3bb865928d27115ed49d4f569419de7c155e42e9206dac38d106d05e2a3225
Signing certificate
326cb2fd81454d4b8c8881e49c69789084948319d4db832fa759b5998e5915a7
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.