# 2FAS Authenticator

> 2FAS Authenticator is a two-factor code app with separate open-source Android (6.0.5, Oct 2026) and iOS repos, both GPL-3.0; a browser extension and server are also on GitHub. It generates TOTP and HOTP codes for any standard service. The app graphics are not open source. It does not store passwords; the same company publishes a separate 2FAS Pass password manager. We found no third-party audit report in the repos. Android 9 or newer.

- Repository: https://github.com/twofas/2fas-android
- Official docs: https://github.com/twofas/2fas-android#readme
- Checked: 2026-10-15

## What it replaces
- 1Password: Two-factor (TOTP) codes (partial). Replaces built-in 2FA codes on phones; no passwords. Backup and sync behaviour not checked.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Yes, local mobile app | https://github.com/twofas/2fas-android#features | 2026-10-15 |
| Code licence | Partial | GPL-3.0; app graphics under separate terms | https://github.com/twofas/2fas-android#license | 2026-10-15 |
| Model weights licence | Confirmed | No separate model weights | https://github.com/twofas/2fas-android#readme | 2026-10-15 |
| Commercial use | Partial | Free to use; GPL conditions apply to modified versions; graphics not licensed | https://github.com/twofas/2fas-android#license | 2026-10-15 |
| Paid services needed? | Confirmed | None required; donations optional | https://github.com/twofas/2fas-android#donations | 2026-10-15 |
| Hardware | Confirmed | Android 9 or newer (minSdk 28); iOS requirements not checked | https://github.com/twofas/2fas-android/blob/develop/buildlogic/src/main/java/com/twofasapp/buildlogic/version/AppConfig.kt | 2026-10-15 |
| Operating systems | Partial | Android and iOS apps; browser extension; no desktop app | https://github.com/twofas/2fas-ios#readme | 2026-10-15 |
| Setup effort | Confirmed | Easy; install from the app stores | https://github.com/twofas/2fas-android#getting-started | 2026-10-15 |

GitHub: 1538 stars, 131 forks, last push 2026-10-06, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/2fas). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.