Octopus Authenticator v6.6.0
APK · 40.8 MB · version code 485 · Android 9+ · uploaded Sep 9, 2026
- 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 v6.7.0, uploaded Sep 9, 2026.
- Size: this file is 40.8 MB; the latest is 41.1 MB (320.1 KB larger).
- Both versions request the same permissions.
File information
- Version
- v6.6.0 (485)
- Uploaded
- Sep 9, 2026
- Size
- 40.8 MB
- Requires
- Android 9+ (API 28)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 4bdab4ec06ba3ba0be204e6389c25dc2
- Signing certificate (SHA-1)
- A9:63:99:8E:26:A6:4E:91:91:B9:9C:1C:C9:0E:0B:C7:E1:E5:B2:4F
- Signed by
- CN=Gil Shapira, OU=R&D, O=SDO
- File name
- com-doubleoctopus-authenticator-485-76524079-4bdab4ec06ba3ba0be204e6389c25dc2.apk
- Package
- com.doubleoctopus.authenticator
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v6.6.0
- Viewing your macOS FileVault password in the app is now controlled by your organization's policy. If your IT team has enabled it, you can continue to view your FileVault password to unlock your Mac at the pre-boot screen, just as before.
- Performance improvements and bug fixes.
Permissions (15)
This version requests 15 permissions, 3 of them sensitive.
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Camera Sensitive android.permission.CAMERA
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.doubleoctopus.authenticator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- Use biometric hardware android.permission.USE_BIOMETRIC
- Use fingerprint hardware android.permission.USE_FINGERPRINT
- Use full screen intent android.permission.USE_FULL_SCREEN_INTENT
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 9, 2026.
- Certificate issued to “SDO” This is the certificate of the Google Play version.
- Same certificate as the 4 other versions checked
Store checks
- Developer signature verified Sep 9, 2026
- Validated against Google Play Sep 9, 2026
- 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 (4 other versions compared). AAPKs doesn't scan files itself.
How to install Octopus Authenticator on Android 9+
You'll need about 81.7 MB of free space.
- Download the APK — tap Download APK above (40.8 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 com-doubleoctopus-authenticator-485-76524079-4bdab4ec06ba3ba0be204e6389c25dc2.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 4bdab4ec06ba3ba0be204e6389c25dc2. 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 Octopus Authenticator — 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 9+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.