Yubico Authenticator
Yubico Authenticator is a free, open-source security app for Android and iOS. Generate OATH codes with YubiKey NEO over NFC. It has 1,397 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid.
github.com/Yubico/yubioath-flutter (opens in a new tab)
Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error
About Yubico Authenticator
Store your unique credential on a hardware-backed security key and take it wherever you go from mobile to desktop. No more storing sensitive secrets on your mobile phone, leaving your account vulnerable to takeovers. With the Yubico Authenticator you can raise the bar for security.
Privacy and F-Droid
F-Droid builds Yubico Authenticator from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
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Is Yubico Authenticator free and open source?
Yes. Yubico Authenticator's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install Yubico Authenticator?
You can install Yubico Authenticator from F-Droid (package com.yubico.yubioath); the links are on this page. Its GitHub repository also publishes releases (latest: 7.4.2).
Is Yubico Authenticator still maintained?
The repository's most recent commit was on Sep 14, 2026. Its F-Droid listing was last updated on Sep 12, 2026. appsgit only lists apps whose repository had a commit in the last six months.