Encrypt RSA

Zero-trace encrypted messaging

Only for iPhone

$2.99 · Designed for iPhone. Not verified for macOS.

iPhone

Zero-trace RSA encrypted messaging. Biometric lock. No servers. No trace. Encrypt RSA is a privacy-first messaging tool that lets you encrypt any message with military-grade RSA-2048 + AES-256-GCM encryption — entirely on your device. No servers. No accounts. No trace. HOW IT WORKS 1. Encrypt your message. A fresh RSA-2048 key pair is generated for every message. Set an expiry time from 30 minutes to 7 days. 2. Split the key. The decryption key is automatically split into 3 shares using Shamir's Secret Sharing. Any 2 of 3 shares unlock the message. Send each share through a different channel — one share alone is cryptographically useless. 3. Decrypt with biometrics. The recipient pastes the encrypted payload and any 2 key shares. Face ID or fingerprint authentication is required before decryption. The message appears — nothing is stored anywhere. SECURITY FEATURES • RSA-2048 + AES-256-GCM hybrid encryption with ephemeral key pairs • Shamir 2-of-3 secret sharing over GF(2⁸) — intercept one share, learn nothing • Biometric gate — Face ID and fingerprint via Secure Enclave, mandatory before every decryption • Server-verified expiry — enforced against Cloudflare's trusted time server, clock manipulation detected • Panic Mode — deniable encryption creates an indistinguishable decoy payload for use under coercion • Screenshot and screen recording blocked at OS level • Clipboard auto-clears 60 seconds after copying a key share • Burn-after-read — wipes the decrypted message and clipboard instantly • Auto-clears all sensitive state after 10 minutes of inactivity • Zero trace — nothing written to storage, iCloud, logs, or any external service ZERO TRACE POLICY Encrypt RSA has no servers, no user accounts, no analytics, and no crash reporting. Biometric data never leaves your device. The only network request made is a lightweight call to verify trusted time when checking message expiry — no identifying information is sent. A Modex Apps product.

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Improvments

Version 2.0

The developer, Rexhino Kovaci, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Rexhino Kovaci
    Size
    22.8 MB
    Category
    Utilities
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 MODEX Apps
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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