# Alternatives to FreeOTP Red Hat's minimal open source OTP. FreeOTP ranks #8 of 10 in Authenticator apps, with an Alt Score of 55. It is licensed under Apache-2.0, free and available on iOS and Android. 6 of 9 checklist rows are verified against a public source. Source: https://altcatalog.com/alternatives/freeotp/ Category: Authenticator apps ## Overview - **Who it's for**: Individuals and organizations who want a free, open-source two-factor authentication app instead of a proprietary one, on either iOS or Android. - **What you get**: FreeOTP generates TOTP and HOTP one-time passwords using open standards, so it works with any server implementing those protocols without a proprietary server-side component. It's open source under the Apache License 2.0 and developed by Red Hat. A companion QR code generator tool is available for services that need to provision tokens. - **How it works**: Add an account by scanning the QR code your service provides (or entering the setup key manually); FreeOTP then generates a time-based or counter-based one-time code you enter when logging in. ## Profile - **License**: Apache-2.0 (verified 2026-07-11) - **Pricing model**: Free (verified 2026-07-11) - **Starts at**: ? - **Platforms**: iOS, Android - **Status**: active (verified 2026-07-11) ## Ranked alternatives | # | App | Alt Score | Licence | Platforms | |---|-----|-----------|---------|-----------| | 1 | [2FAS](https://altcatalog.com/alternatives/2fas.md) | 85 | GPL-3.0 | iOS, Android, Browser extension | | 2 | [Stratum](https://altcatalog.com/alternatives/stratum.md) | 75 | GPL-3.0 | Android | | 3 | [Ente Auth](https://altcatalog.com/alternatives/ente-auth.md) | 70 | AGPL-3.0 | iOS, Android, Windows, macOS | | 4 | [Aegis Authenticator](https://altcatalog.com/alternatives/aegis-authenticator.md) | 60 | GPL-3.0 | Android | | 5 | [Authy](https://altcatalog.com/alternatives/authy.md) | 55 | Proprietary | iOS, Android | | 6 | [Duo Mobile](https://altcatalog.com/alternatives/duo-mobile.md) | 55 | Proprietary | iOS, Android | | 7 | [Google Authenticator](https://altcatalog.com/alternatives/google-authenticator.md) | 55 | Proprietary | iOS, Android | | 8 | [Microsoft Authenticator](https://altcatalog.com/alternatives/microsoft-authenticator.md) | 45 | Proprietary | iOS, Android | | 9 | [Yubico Authenticator](https://altcatalog.com/alternatives/yubico-authenticator.md) | 40 | Apache-2.0 | iOS, Android, Windows, macOS | Alt Score = Verified coverage (90%) + Visibility (10%). See https://altcatalog.com/how-alt-score-works/ ## Feature comparison Legend: Yes / No / Partial / ? (not verified). | Authenticator apps checklist | FreeOTP | 2FAS | Stratum | Ente Auth | Aegis Authenticator | Authy | |---|---|---|---|---|---|---| | Pricing model | Free | Free | Free | Free | Free | Free | | Starts at | ? | ? | ? | ? | ? | ? | | License | Apache-2.0 | GPL-3.0 | GPL-3.0 | AGPL-3.0 | GPL-3.0 | Proprietary | | Platforms | iOS, Android | iOS, Android, Browser extension | Android | iOS, Android, Windows, macOS, Linux, Web | Android | iOS, Android | | TOTP | Yes | Yes | Yes | Yes | Yes | Yes | | Encrypted backup | Yes | Yes | Yes | Yes | Yes | Yes | | Multi-device sync | Partial | Yes | Partial | Yes | No | Yes | | Browser extension | ? | Yes | ? | No | No | No | | Apple Watch / Wear OS | ? | Partial | Yes | No | No | Partial | | Import from other apps | ? | Yes | Yes | Yes | Yes | No | | Export allowed | Yes | Yes | Yes | Yes | Yes | No | | Open source | Yes | Yes | Yes | Yes | Yes | No | | Push-based approvals | No | ? | ? | ? | No | Yes | ## Sources Sources for FreeOTP. Each alternative is sourced on its own page. - **Platforms**: iOS, Android — (verified 2026-07-11) - Note: ,"owner":"freeotp","isFork":false,"description":"","allTopics":[],"primaryLanguage":{"name":"Swift","color":"#F05138"}" - Quote: “freeotp-ios” - **License**: Apache-2.0 — (verified 2026-07-11) - Quote: “FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification.” - **Pricing model**: Free — (verified 2026-07-11) - Quote: “FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification.” - **Status**: active — (verified 2026-07-11) - Note: committedDate":"2026-06-11T14:44:33.000-04:00"" - **TOTP**: Yes — (verified 2026-07-11) - Quote: “TOTP (Time-Based One-Time Password Algorithm)” - **Encrypted backup**: Yes — (verified 2026-07-11) - Quote: “users will be required to setup a master password to be stored in the Android Keystore and used to encrypt token data” - **Multi-device sync**: Partial — (verified 2026-07-11) - Quote: “Once backup data is available, restored token data will be pushed to the device on install of the FreeOTP app.” - **Export allowed**: Yes — (verified 2026-07-11) - Quote: “Choosing Backup will prompt to select a path where to save the encrypted .xml file to.” - **Open source**: Yes — (verified 2026-07-11) - Quote: “FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification.” - **Push-based approvals**: No — (verified 2026-07-11) - Quote: “FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols.” --- Ranked by verified data, never by who paid. https://altcatalog.com/trust/