BIG Alarm for Seniors v1.2.4
APK · 1.1 MB · version code 124 · Android 5.0+ · uploaded Mar 9, 2026
- Same certificate as the 4 other versions checked Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v1.2.7, uploaded May 7, 2026 — about 2 months after this one.
- Size: this file is 1.1 MB; the latest is 1.2 MB (55.7 KB larger).
- Both versions request the same permissions.
File information
- Version
- v1.2.4 (124)
- Uploaded
- Mar 9, 2026
- Size
- 1.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- da540b58092608ce2f5d15e0d57e0dd3
- Signing certificate (SHA-1)
- F1:43:00:CA:2B:6A:A6:2C:47:AC:0E:6C:DD:0D:75:78:1C:DF:FF:08
- Signed by
- O=2BIG
- File name
- cz-twobig-alarm-124-73867585-da540b58092608ce2f5d15e0d57e0dd3.apk
- Package
- cz.twobig.alarm
- Downloads (all versions)
- 5.6K
- Age rating
- PEGI 3 · Everyone
What's new in v1.2.4
v1.2.4
+ compatible with the latest Android versions
+ alarm screen icon now shown on lock screen on Android 9 and newer
* changed the obsolete system alarm behavior
* fixed alarm not relaunching after device reboot in some cases
* fixed a rare config change causing the alarm to stop ringing on Android 16
* fixed alarm time prefs written on the wrong thread (could block UI)
- removed obsolete system settings permission flow
Permissions (12)
This version requests 12 permissions, 1 of them sensitive.
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Alarm set alarm (custom) com.android.alarm.permission.SET_ALARM
- Control vibration android.permission.VIBRATE
- Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- Internal broadcast protection (app-defined) cz.twobig.alarm.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Request ignore battery optimizations android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- Use exact alarm android.permission.USE_EXACT_ALARM
- Use full screen intent android.permission.USE_FULL_SCREEN_INTENT
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “2BIG” Not the developer's name (“BIG Launcher Team”). Names in certificates can't be verified, so this alone proves nothing.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Mar 9, 2026
- Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (4 other versions compared). AAPKs doesn't scan files itself.
How to install BIG Alarm for Seniors on Android 5.0+
You'll need about 2.2 MB of free space.
- Download the APK — tap Download APK above (1.1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap cz-twobig-alarm-124-73867585-da540b58092608ce2f5d15e0d57e0dd3.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be da540b58092608ce2f5d15e0d57e0dd3. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open BIG Alarm for Seniors — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 5.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.