Privacy Policy

How OtpVault protects your data — across Windows, Android and the browser.

Zero-Knowledge 🔐 AES-256-GCM 🧪 Argon2id 📅 Updated: Sep 2026
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Information We Collect

When you create an account, we collect only your email address and an encrypted copy of your vault. Your password is never collected, transmitted, or stored — the encryption key is derived from it on your device and never leaves it.

  • No trackers, ads, or analytics of any kind.
  • Camera access is used solely for scanning QR codes to add accounts.
  • Your TOTP secrets are never readable by us or any third party.
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How We Use Your Information

Your email is used only for authentication and to associate your encrypted vault with your account on our backend. Your encrypted vault data is stored solely for the purpose of cloud backup and restoration across your devices — and only if you choose to enable cloud sync.

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Biometrics (Android)

OtpVault can unlock with your fingerprint or face using Android's system BiometricPrompt. Biometric data is processed entirely by the operating system on your device — OtpVault never sees, stores, or transmits any biometric information.

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Data Storage and Security

Your vault is encrypted end-to-end with AES-256-GCM before it ever leaves your device. The key is derived from your password with Argon2id and never transmitted. Our servers (hosted on Neon PostgreSQL behind a Vercel serverless API) only ever see ciphertext — we have no ability to read your vault, which is why we can never recover it if you forget your password.

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Data Sharing

We do not sell, trade, or share your personal information with any third party. The infrastructure partners we rely on (Vercel, Neon, GitHub) process data solely to operate the service — they never have access to readable vault contents.

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App Updates

OtpVault checks GitHub Releases for new versions. On Windows and Android you may be offered a one-tap update that downloads the official installer/APK. Only official releases published to the OtpVault GitHub repository are ever used.

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Your Rights

You own your data. You can export your whole vault from the app settings at any time, and you can delete your account and all associated data with one tap. For anything else, contact us at the address below.

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Changes to This Policy

We may update this Privacy Policy from time to time. Material changes are announced through the app and on the repository. Continued use of the service after changes take effect means you accept the updated policy.

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Contact

Questions, data-deletion requests, or anything privacy-related? Reach out directly — this is your single point of contact with the developer:

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A quick note about this email:

This address may look like a random string of letters, but it is simply the developer's personal email address — not a suspicious or auto-generated one. It is the official way to reach us.