MarsClock v1.28
APK · 5.2 MB · version code 28 · Android 6.0+ · uploaded Jul 17, 2025
- Signature matches the Google Play version 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 v1.32, uploaded Sep 2, 2026 — about 1 year after this one.
- Size: this file is 5.2 MB; the latest is 5.2 MB (31.7 KB larger).
- Both versions request the same permissions.
File information
- Version
- v1.28 (28)
- Uploaded
- Jul 17, 2025
- Size
- 5.2 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- e97524e52135db29601052cb8c0e0585
- Signing certificate (SHA-1)
- 67:52:C9:D7:4D:58:BE:97:48:BE:69:A7:88:80:02:89:7D:7A:4F:C1
- Signed by
- CN=Scott Maxwell, OU=Top Dude, O=Caerlaverock Software, L=Pasadena, ST=CA, C=US
- File name
- org-scottmaxwell-android-marsclock-28-71152690-e97524e52135db29601052cb8c0e0585.apk
- Package
- org.scottmaxwell.android.marsclock
- Downloads (all versions)
- 5K+
- Age rating
- PEGI 3 · Everyone
What's new in v1.28
“No functionality changed in this release; just updating for API level 35 per Google Play Store policies.”
Permissions (8)
This version requests 8 permissions, 1 of them sensitive.
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- 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
- Use exact alarm android.permission.USE_EXACT_ALARM
- Wearable receive complication data (custom) com.google.android.wearable.permission.RECEIVE_COMPLICATION_DATA
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 17, 2025.
- Certificate issued to “Caerlaverock Software” This is the certificate of the Google Play version.
- Same certificate as the 3 other versions checked
Store checks
- Developer signature verified Jul 17, 2025
- Validated against Google Play Jul 17, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself.
How to install MarsClock on Android 6.0+
You'll need about 10.4 MB of free space.
- Download the APK — tap Download APK above (5.2 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 org-scottmaxwell-android-marsclock-28-71152690-e97524e52135db29601052cb8c0e0585.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 e97524e52135db29601052cb8c0e0585. 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 MarsClock — 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 6.0+). 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.