Ressl Auth
Zero-knowledge 2FA vault
Free · Designed for iPad. Not verified for macOS.
Ressl Auth is a privacy-first authenticator for your two-factor (2FA) codes — built around zero-knowledge, end-to-end encryption. Your TOTP secrets are encrypted on your device with a key only you hold, so they stay private even from the server that syncs them.
WHY RESSL AUTH
• Zero-knowledge by design — your vault is encrypted on-device with AES-256; the server stores only ciphertext and can never read your codes.
• Strong key derivation — your passphrase is stretched with Argon2id before it ever protects your data.
• You stay in control — connect to the Ressl Auth service or host the open backend yourself.
FEATURES
• Generate time-based one-time passwords (TOTP) for all your accounts
• Add entries by scanning a QR code or entering a key manually
• Organize accounts into groups and find them instantly with search
• Face ID / Touch ID lock for your vault
• Sign in with a passkey
• Universal Clipboard — copy a code on iPhone, paste on your Mac; codes auto-expire after use
• Optional service icons, fetched only when you choose
PRIVACY FIRST
We can't see your codes, your secrets, or your account names — everything sensitive is encrypted before it leaves your device. No tracking. No ads.
Ressl Auth is designed for iOS 26 with a clean, modern interface.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Reliability and security improvements:
• Fixed a rare crash when adding certain codes.
• More reliable sign-in when setting up a new device.
• Strengthened the zero-knowledge protection of your encrypted vault.
• Stability and interface refinements.
The developer, Robert Ressl, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robert Ressl
- Size
- 4 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Ressl