Stratum icon
Stratum icon

Stratum

Open-source authenticator for Android and Wear OS providing local, encrypted token storage, TOTP/HOTP support, and export options. No server communication, no corporate ties, and no data lock-in—prioritizing privacy, usability, backup, and secure multi-token management.

Stratum screenshot 1
Stratum screenshot 2
+5
Stratum screenshot 3

Cost / License

Application type

Platforms

  • Android  IzzyOnDroid repo: [https://apt.izzysoft.de/fdroid/index/apk/com.stratumauth.app](https://apt.izzysoft.de/fdroid/index/apk/com.stratumauth.app)
  • Android Tablet  fdroidrepos://stratumauth.com/fdroid/repo?fingerprint=B975B325E4F39465DF1034D6BC2C11A3926F60CC07B820C51FBE1C757555F28A
  • Android Wear
  • F-Droid  [https://fdroid.link/#https://stratumauth.com/fdroid/repo?fingerprint=B975B325E4F39465DF1034D6BC2C11A3926F60CC07B820C51FBE1C757555F28A](https://fdroid.link/#https://stratumauth.com/fdroid/repo?fingerprint=B975B325E4F39465DF1034D6BC2C11A3926F60CC07B820C51FBE1C757555F28A)
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25likes
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Features

Properties

  1.  Lightweight
  2.  Privacy focused

Features

  1.  Time-based One-time Password
  2.  Two-factor Authentication
  3.  Encrypted Backup
  4.  Dark Mode
  5.  Compatible with Android Wear
  6.  Ad-free
  7.  Works Offline
  8.  Biometric Authentication
  9.  No Tracking
  10.  Multiple Account support
  11.  End-to-End Encryption
  12.  Multi-Factor Authentication (MFA)

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Stratum information

  • Developed by

    Jamie M. Hodgson

  • Licensing

    Open Source (GPL-3.0) and Free product.

  • Written in

  • Rating

    Average rating of 5

  • Alternatives

    62 alternatives listed

  • Badge

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  • Supported Languages

    • English
    • Chinese
    • French
    • Spanish
    • Swedish
    • German
    • Esperanto
    • Italian
    • Dutch
    • Polish
    • Portuguese
    • Russian
    • Slovene
    • Korean
    • Japanese
    • Thai
    • Ukrainian
    • Turkish
    • Finnish

AlternativeTo Categories

Security & Privacy, Backup & Sync

GitHub repository

  •  4,605 Stars
  •  282 Forks
  •  79 Open Issues
  •   Updated  
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Our users have written 2 comments and reviews about Stratum, and it has gotten 25 likes

Stratum was added to AlternativeTo by Paul on and this page was last updated . Stratum is sometimes referred to as Authenticator Pro. 

Comments and Reviews

   
Top Positive Comment
undeniably_lizard
4

My search to find the best TOTP app has finally come to an end, as Authenticator Pro is simply the best! Despite “Pro” being in the name, it is entirely free and open source. Plus, it takes great measures to secure user data, like encrypted backups, biometric or password unlock, and tap to reveal code.

It is also dead easy to use with a customizable and material design.

K0RR
1

It looks great and has many import and export possibilities, I just wish it had a better name. The only thing missing for me is a browser extension like the one from 2FAS

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Official Links

AppStores & Other Links

Download from Google Play Store

What is Stratum?

Stratum (formerly Authenticator Pro) is a community-backed open-source project which aims to provide privacy and security to users. The source-code is auditable by anyone on GitHub and released under the GPL 3.0 license. The project has no corporate ties or interests but, rather has the purpose of providing a secure and private two-factor authentication solution to the privacy conscious.

Unlike alternative user-hostile applications, Stratum does not lock-in your data or communicate with distant servers. Everything is safely protected in the app and can be exported at any time. In addition to the privacy benefits, the app has many quality-of-life improvements for better usability.