Foilauth

Free plan AndroidLinux

What Foilauth is

Foilauth is a free, open-source one-time password generator for Sailfish OS. It creates time-based TOTP codes, counter-based HOTP codes, and Steam passwords. Authentication keys are encrypted with the Foil password and stored in the ~/Documents/FoilAuth directory. Tokens can be shared or imported through QR codes, and version 1.1.18 added importing otpauth URLs from the clipboard. The app scans QR codes with the front camera, with that camera choice configurable, and includes an adjustable auto-lock delay. Foilauth shares its Foil password and RSA encryption key with Foil Pics and Foil Notes. Encrypted files and the Foil key can be included in backups through the My Backup app. The package uses a BSD license, and its source code is linked through OpenRepos to GitHub. SailfishOS:Chum offers RPM downloads for aarch64, armv7hl, and i486 architectures. The listing identifies Android and Linux platforms, with Sailfish OS as the supported platform, and lists a free plan at no cost.

Who it suits

Foilauth suits Sailfish OS users who need TOTP, HOTP, or Steam password generation with encrypted key storage. It also fits users who want QR-code import, configurable locking, and open-source licensing.

What it does well

Supports TOTP, HOTP, and Steam passwords
Encrypts authentication keys with a Foil password
Imports and shares tokens through QR codes
Offers configurable auto-lock and front-camera scanning
BSD-licensed source is linked on GitHub

What to know first

Supported platform is Sailfish OS
Backup requires the My Backup app
Keys share a Foil password and RSA key with related apps

Plans

Plan	Billed and limits	Price
Foilauth	Sailfish OS app · TOTP, HOTP and Steam passwords	Free

As sailfishos-chum.github.io lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

Foilauth provides core one-time-password generation with encrypted storage, QR workflows, and adjustable locking. Its Sailfish OS focus and backup dependency are important considerations.

Facts from Foilauth's own pages

Auto-lock: The app includes a configurable auto-lock delay. · sailfishos-chum.github.io, 12 Oct 2026
Backup: Encrypted files and the Foil key can be added to backup with the My Backup app. · openrepos.net, 12 Oct 2026
Camera: It can scan QR codes with the front camera, and the front camera option is configurable. · sailfishos-chum.github.io, 12 Oct 2026
Clipboard import: Version 1.1.18 added importing otpauth URLs from the clipboard. · sailfishos-chum.github.io, 12 Oct 2026
Code type: totp and hotp · sailfishos-chum.github.io, 22 Sept 2026
Download: The SailfishOS:Chum listing offers RPM downloads for aarch64, armv7hl and i486 architectures. · sailfishos-chum.github.io, 12 Oct 2026
Encrypted secrets: It keeps authentication keys encrypted with the Foil password. · openrepos.net, 12 Oct 2026
License: The package is licensed under BSD. · sailfishos-chum.github.io, 12 Oct 2026
Password types: It supports time-based TOTP, counter-based HOTP and Steam passwords. · openrepos.net, 12 Oct 2026
Purpose: Foilauth is a secure one-time password generator for Sailfish OS. · sailfishos-chum.github.io, 12 Oct 2026
QR codes: Tokens can be shared and imported via QR codes. · openrepos.net, 12 Oct 2026
Related apps: The Foil password and RSA encryption key are shared with Foil Pics and Foil Notes. · openrepos.net, 12 Oct 2026
Source code: The OpenRepos listing links to the harbour-foilauth source code on GitHub. · openrepos.net, 12 Oct 2026
Storage: Encrypted authentication keys are stored in ~/Documents/FoilAuth. · openrepos.net, 12 Oct 2026
Supported platforms: Sailfish OS · sailfishos-chum.github.io, 22 Sept 2026

Where Foilauth stands on Freedom251

Authenticator apps#82 of 111