Secret Text: Encrypt Message
Encrypt text for any messenger
Free · In‑App Purchases
Free to download. Contact setup and handshake are free; encryption and decryption require trial or subscription.
Secret Text is free to download and use for contact setup and handshake. It is a secure text translator, not a chat app. Encryption and decryption require an active 3-day free trial or Secret Text monthly/yearly auto-renewable subscription.
It encrypts your plaintext into ciphertext that you can copy and paste through any messaging app (iMessage, WhatsApp, Telegram, WeChat, etc.), and decrypts ciphertext back into plaintext on the other end.
How it works:
1. Add a contact and complete a guided handshake to establish an encrypted session
2. Start the official 3-day free trial or subscribe to unlock encryption/decryption
3. Type your message -> tap "Encrypt & Copy" -> paste the ciphertext into any messenger
4. Receive ciphertext -> tap "Paste & Decrypt" -> read the plaintext
Security:
- End-to-end encryption powered by Signal Protocol (X3DH + Double Ratchet)
- AES-256-CBC with HMAC-SHA256 for every message
- Per-message forward secrecy: compromising one key cannot decrypt past or future messages
- Out-of-order message decryption support
- Identity fingerprint verification through a trusted channel
- All keys are generated and stored locally on your device
Features:
- Works with any messaging platform, no need to switch apps
- Guided handshake wizard with step-by-step instructions
- Contact management with session status at a glance
- Monthly and yearly auto-renewable subscriptions with a 3-day free trial
- Supports English, Simplified Chinese, and Traditional Chinese
- Available on iOS and macOS with cross-platform session compatibility
- Dark mode support
Your messages stay private, no matter which messenger you use.
Privacy Policy: https://covalith.com/legal/apps/secret-text/privacy/
Terms of Use (Apple Standard EULA): https://www.apple.com/legal/macapps/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 建忠 黎, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 建忠 黎
- Size
- 4.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SecretText Premium $24.99
- SecretText Premium $3.99
- Copyright
- © 2026 Covalith