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Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.

Get the app

On F-Droid On Google Play

Get source code

The source for Silence is open, so that anyone can easily verify it works as advertised. It is licensed GPLv3 and will always be free.

View source code on GitHub ยป

Last commit: "Bump to v0.15.1", by BLeQuerrec (12 hours ago).


Silence works like any other SMS application. There's nothing to sign up for and no new service your friends need to join.


Silence communicates using encrypted SMS messages. No servers or internet connection required.


Silence provides end-to-end encryption for your messages using the painstakingly engineered Axolotl encryption protocol.


All messages are encrypted locally, so if your phone is lost or stolen, your messages are protected.

Open Source

Silence is Free and Open Source, enabling anyone to verify its security by auditing the code.

Join the community!

Have a question? Want to help out? Join our IRC channel: #Silence on Freenode or follow @SilenceIM on Twitter.