Foilauth review
A focused open-source authenticator for Sailfish users who need local encrypted OTP storage.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Foilauth is an open-source mobile authenticator for individual Sailfish OS users who need locally stored one-time-password secrets. It generates both time-based TOTP and counter-based HOTP codes, with support for Steam tokens. Token setup can use QR scanning or clipboard-based otpauth URL imports, while grouping and organization tools help manage multiple authenticators.
Its strongest area is focused credential handling. Foilauth encrypts stored authenticator secrets and includes configurable auto-lock, giving the application a defined local-storage and access-control focus. Setup supports common token enrollment paths through QR codes and otpauth URLs, and the published feature set also includes clipboard-based HOTP imports. These capabilities make it suitable for users who want a compact authenticator centered on encrypted secrets rather than broader account-management features.
The main trade-off is platform scope. Foilauth is identified as a Sailfish OS application and is distributed as Sailfish OS RPM packages through the SailfishOS:Chum community repository. That narrow ecosystem fit makes it a practical choice for Sailfish users, but less suitable for anyone who needs a wider cross-platform authenticator or a broader device ecosystem. Choose Foilauth when Sailfish OS support, open-source availability, encrypted local storage, and TOTP/HOTP coverage are the priorities. Choose an alternative when verified support across multiple platforms is essential.
Foilauth pros and cons
- Where it wins
- Generates both TOTP and HOTP codes
- Encrypts stored secrets with configurable auto-lock
- Supports QR, otpauth, Steam, and token organization
- Where it doesn't
- Focused on Sailfish OS rather than broad platform coverage
- Provides basic authentication features without AI tools
- Distributed as RPM packages through a community repository
Foilauth fact sheet, pricing and score →
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