A fork of Signal with only SMS/MMS encryption.
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CHANGELOG.md Bump version to v0.15.13 Mar 23, 2018
CONTRIBUTING.md add the command line to manually grab a debug log in CONTRIBUTING.md Mar 7, 2018
LICENSE Initial Project Import Dec 20, 2011
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build.gradle Bump version to v0.15.13 Mar 23, 2018
gradle.properties Improve animations on audio controls, update gradle android build tool Feb 15, 2017
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gradlew.bat gradle wrapper 1.10, android plugin 0.8, android support 19.0.1 // Feb 19, 2014
proguard.cfg A slight foray into the modern era Feb 15, 2017
settings.gradle move to Signal Protocol Mar 20, 2017


Silence Build Status

Silence (formerly SMSSecure) is an SMS/MMS application that allows you to protect your privacy while communicating with friends.

Using Silence, you can send SMS messages and share media or attachments with complete privacy.

Get it on F-Droid Get it on Google Play


  • Easy. Silence works like any other SMS application. There's nothing to sign up for and no new service your friends need to join.
  • Reliable. Silence communicates using encrypted SMS messages. No servers or internet connection required.
  • Private. Silence uses the Signal encryption protocol to provide privacy for every message, every time.
  • Safe. 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.

Project goals

This is a fork of TextSecure (now Signal) that aims to keep the SMS encryption that TextSecure removed for a variety of reasons.

Silence focuses on SMS and MMS. This fork aims to:

  • Keep SMS/MMS encryption
  • Drop Google services dependencies (push messages are not available in Silence)
  • Integrate upstream bugfixes and patches from TextSecure

Migrating from TextSecure to Silence

  • In TextSecure, export a plaintext backup. Warning: the backup will not be encrypted.
  • Install Silence.
  • In Silence, import the plaintext backup (this will import the TextSecure backup if no Silence backup is found).
  • If TextSecure v2.6.4 or earlier is installed, update or uninstall it so it doesn't conflict (can cause errors with key exchanges).
  • Enjoy Silence!

Note: You will have to start new secured sessions with your contacts.


See CONTRIBUTING.md for how to contribute code, translations, or bug reports.

Instructions on how to setup a development environment and build Silence can be found in BUILDING.md.


We accept Bitcoin donations. This will help us to pay various costs (web hosting, domain name, etc.). Our Bitcoin address is:




Looking for documentation? Check out the wiki of the original project:



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


Cryptography Notice

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.


Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html