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Terms of Service

Effective Date: April 4, 2026

1. Acceptance of Terms

By downloading, installing, or using Authsia ("the App"), you agree to these Terms of Service. If you do not agree, do not use the App.

2. Description of Service

Authsia is a two-factor authentication and credential management app for iOS and macOS. It provides:

  • TOTP/HOTP authentication code generation
  • A secure vault for passwords, certificates, SSH keys, and secure notes
  • A command-line interface (macOS only)
  • A Chrome browser extension for password autofill (macOS only)

The App operates offline and stores all data locally on your device or in your personal iCloud Keychain. There are no Authsia servers involved in any operation.

3. User Responsibilities

By using Authsia, you agree to:

  • Maintain the security of your device and biometric authentication (Face ID, Touch ID, or device passcode)
  • Keep backups of your data. If you lose access to your device and iCloud account, your data may be unrecoverable
  • Not use the App for any unlawful purpose
  • Take responsibility for all secrets and credentials stored in the App

4. No Account Required

Authsia does not require user registration or an account. There is no Authsia server-side component. You are identified solely by your Apple device and Apple ID (for iCloud sync, if enabled).

5. Intellectual Property

The Authsia name, logo, and application code are the property of Clarion Stack. You are granted a limited, non-exclusive, non-transferable license to use the App for personal or professional purposes on Apple devices you own or control.

6. Disclaimer of Warranties

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE. CRYPTOGRAPHIC IMPLEMENTATIONS FOLLOW PUBLISHED STANDARDS (RFC 6238 FOR TOTP, RFC 4226 FOR HOTP) BUT ARE PROVIDED WITHOUT GUARANTEE.

7. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, CLARION STACK SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO: LOSS OF DATA, LOSS OF ACCESS TO ACCOUNTS OR SERVICES PROTECTED BY 2FA CODES, OR INABILITY TO GENERATE AUTHENTICATION CODES. OUR TOTAL LIABILITY SHALL NOT EXCEED THE AMOUNT YOU PAID FOR THE APP.

8. Termination

You may stop using the App at any time by deleting it from your devices. Since there is no Authsia account, there is nothing further to terminate or cancel. These Terms survive any cessation of use.

9. Governing Law

These Terms shall be governed by and construed in accordance with the laws of Singapore, without regard to conflict of law provisions. Any disputes arising from these Terms or your use of the App shall be subject to the exclusive jurisdiction of the courts of Singapore.

10. Changes to These Terms

We may update these Terms of Service from time to time. Continued use of the App after changes constitutes acceptance of the revised Terms. Material changes will be noted by updating the effective date at the top of this page.

11. Contact Us

If you have any questions about these Terms of Service, please contact us:

Email: [email protected]