Secure SMS
Your messages, your privacy. Cross-platform SMS encrypted messaging that keeps your communications secure and private on both Android and iOS.
Note: Direct APK download is available for Android. When installing from APK, you'll need to enable "Install from Unknown Sources" in your Android settings.
Message Encryption
Your messages are encrypted from the moment you send them, across both Android and iOS platforms.
Privacy First
Stored keys in the app are securely encrypted and stored on your device. Works seamlessly on both Android and iOS with no internet connection required.
Fast & Reliable
Quick message delivery with minimal battery impact and data usage on both mobile platforms.
How It Works
Install & Set Up
Download Secure SMS from Google Play Store, App Store, or directly as APK for Android and install on your device.
Start Messaging
Agree on a secret key with each user, before sending encrypted messages to other Secure SMS users instantly.
Enjoy Secure Communication
Your messages are encrypted and can only be read by the intended recipient.
Ready to Get Started?
Download Secure SMS now on Android or iOS and take control of your privacy.
Hardened Security Architecture
Engineered to meet the highest standards of cryptographic integrity without the need for an internet connection.
AES-256 Protocol
Military-grade standards protecting every character you type. Governments trust it; so can you.
Zero-Knowledge Storage
Keys never leave your hardware. No cloud servers, no backdoors, and no central databases.
Unified Handshake
A seamless secure protocol allows Android and iOS users to communicate without borders.
SMS-Only Reliance
Purely cellular encryption. No internet connection is ever used for the security logic.
Have Questions?
Need help setting up your encryption keys or want to learn more about how Secure SMS protects your data? Visit our Help Center for detailed tutorials and frequently asked questions.
Built for Every Scenario
Whether you're closing a deal or staying in touch with family, privacy should never be optional.
Executive Privacy
Shield sensitive trade secrets, legal discussions, and financial data from corporate espionage.
Personal Freedom
Take your conversations off the grid. No data mining, no targeted ads, and no unauthorized eyes. Ever.
Global Resilience
Stay secure in remote locations or during outages. If you have a cellular signal, you have encryption.