ATMOS : Online dive logbook
v4.2.1 · 66.1 MB · code 1853
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File information
UpdatedFeb 6, 2026
PublishedApr 9, 2021
Packagecom.atmos.android.logbook
Versionv4.2.1 (1853)
Size66.1 MB
MD54fa86164a9ad841a09575672fd84199b
Min SDK23
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA173:35:04:09:A3:7D:40:8C:32:CE:BA:C9:24:A9:8B:FE:58:81:26:AC
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads10,000
This version10,000
DeveloperATMOS co., Ltd.
Age ratingEveryone
What's new in v4.2.1
We have released version 4.2.1, and this update includes:
* Redesigned the summary page with more detailed activity statistics
* Added sign-in with Google
* Added biometric login support
* Added STA format logs (Mission3)
* Added the ability to configure Mission3 freediving alerts and Custom Table via the app (1.108 or later)
* Added Mission3 “Find Device” feature (1.108 or later)
* Other minor bug fixes
* Redesigned the summary page with more detailed activity statistics
* Added sign-in with Google
* Added biometric login support
* Added STA format logs (Mission3)
* Added the ability to configure Mission3 freediving alerts and Custom Table via the app (1.108 or later)
* Added Mission3 “Find Device” feature (1.108 or later)
* Other minor bug fixes
Security scan
TRUSTED
- Developer signature verified 2026-02-06
- Signature SHA1 73:35:04:09:A3:7D:40:8C:32:CE:BA:C9:24:A9:8B:FE:58:81:26:AC
- File MD5 4fa86164a9ad841a09575672fd84199b
How to install ATMOS : Online dive logbook v4.2.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 66.1 MB of free storage.
- Grab com.atmos.android.logbook_1853.apk — hit the Download button above (66.1 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 4fa86164a9ad841a…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.atmos.android.logbook_1853.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open ATMOS : Online dive logbook — tap Open on the install screen, or find the ATMOS : Online dive logbook icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for ATMOS : Online dive logbook
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 6.0 Marshmallow or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.