Stratum review
A capable Android authenticator with encrypted backups, offline access and Wear OS support.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Stratum is a free, open-source authenticator app for Android with a companion app for Wear OS. It generates TOTP and HOTP codes and also supports mOTP, Steam and Yandex formats. The app is designed for privacy-conscious individuals who want local control of authentication data without a required online account or cloud service. Offline operation, biometric and password protection, encrypted backups, and imports from supported authenticator apps make it suited to users moving from another authenticator or managing codes locally.
Its pricing is straightforward: Stratum is free, with no paid tiers described. The feature set includes encrypted backup and restore, account import and export, authenticator categories, custom icons, ordering, and display customization. WebDAV and DAVx5 integrations support the documented backup and synchronization options, while the app can operate without internet access. The published feature set gives users practical control over organization, protection, and portability without introducing a subscription structure.
Platform fit is Stratum's clearest trade-off. The Android app and Wear OS companion cover users in that ecosystem, and the documented multi-device synchronization is between those two components. Stratum does not provide cloud-service syncing, so it is not aimed at people seeking broad cross-platform account synchronization. Choose it for open-source code generation, encrypted local backups, offline access, and Wear OS support on Android. Choose an alternative if access across other platforms or cloud-based synchronization is central to your setup.
Stratum pros and cons
- Where it wins
- Free and open source with TOTP and HOTP code generation
- Encrypted backup and restore with biometric and password protection
- Wear OS companion app plus WebDAV and DAVx5 integrations
- Where it doesn't
- Android-only support limits coverage across other platforms
- No cloud-service syncing for broader device synchronization
- Wear OS synchronization depends on a connected Android device
Stratum fact sheet, pricing and score →
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