
Challenge Alarm Clock
Alarm Clock to Challenge you Sleep If You can sleep by using this alarm
Nicole Ocean · alarmclock.com.challengealarm.alarmclock
- Signature matches the Google Play version Details
At a glance
- Latest version
- v8.0 (8)
- Updated
- Sep 1, 2025 (1 year ago)
- APK size
- 19.9 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- ARM 32-bit, ARM 64-bit
- Category
- Productivity (app)
- Listed since
- Jun 13, 2021 (at least)
- Permissions
- 16 (5 sensitive)
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
Challenge Alarm Clock is an app by Nicole Ocean in the Productivity category, listed since at least June 2021. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
Since version 3.0, the APK grew from 17 MB to 19.9 MB and the minimum Android version rose from 4.2 to 5.0. It asks for 16 permissions, 5 of them sensitive, including camera, read media images and read shared storage. Compared with version 6.0, it adds 2 new permissions: “Read media images” and “High sampling rate sensors”. The app can read the advertising ID that ad and analytics services use.
Description
From the listing uploaded by “appupdater”.
Version history
4 versions are listed, going back to v3.0. Since v6.0 it requires Android 5.0+.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 1, 2025.
- Certificate issued to “TransLanguage” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks and file details
- Developer signature verified Sep 1, 2025
- Validated against Google Play Sep 1, 2025
- Signed byCN=myTranslator, OU=TranOrganization, O=TransLanguage, L=Delhi, ST=Delhi, C=91
- Signing certificate (SHA-1)9B:86:79:BE:C2:58:BC:38:6A:5E:7C:D3:46:97:E2:F9:32:03:54:A2
- File MD52e8b6ff781c3a57c04dd8b649bd966ba
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (16)
Challenge Alarm Clock requests 16 permissions, 5 of them sensitive.
- Camera Sensitive android.permission.CAMERA
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read media images Sensitive android.permission.READ_MEDIA_IMAGES
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
- Advertising ID com.google.android.gms.permission.AD_ID
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- High sampling rate sensors android.permission.HIGH_SAMPLING_RATE_SENSORS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Camera android.hardware.camera
- Basic touch input android.hardware.faketouch
- Portrait screen android.hardware.screen.portrait
Challenge Alarm Clock APK: questions and answers
Is there a version of Challenge Alarm Clock for older Android phones?
The current version needs Android 5.0 or later. Version 3.0 is the newest listed build that installs on Android 4.2 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.0 · All versions
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the Challenge Alarm Clock APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 2e8b6ff781c3a57c04dd8b649bd966ba.