Free, world-wide, private messaging and phone calls for iPhone.

Matthew Chen 436c46a2ef "Bump build to" 6 days ago
.github fb3efe3647 Update 1 year ago
Pods @ 758e3a8213 d0de5cee01 Update Cocoapods. 6 days ago
Scripts 74ca0aecb7 update string linter path 4 weeks ago
SettingsBundle 2c18a75d12 Update to the new GitHub organization name 1 year ago
Signal 436c46a2ef "Bump build to" 6 days ago
Signal.xcodeproj 4f03f969fc Rework "view once" messages. 2 weeks ago
Signal.xcworkspace 7703155bb3 Enable legacy build system. 8 months ago
SignalMessaging 97b26a44fa Fix an issue where registration lock PINs were truncated to 16 characters. 6 days ago
SignalServiceKit 57fc2abd4c Simplify 2FA PIN verification. 6 days ago
SignalShareExtension 436c46a2ef "Bump build to" 6 days ago
ThirdParty cce1c52b24 rebuild WebRTC M75 w/ iOS9 support 2 months ago
fastlane 2233d4c72c Add jenkinsfile 7 months ago
protobuf 34a404f589 Clean up ahead of PR. 1 year ago
.clang-format 933281f234 format objc. 3 years ago
.gitattributes 33428d45fd Supporting diffing of localizablestrings. 3 years ago
.gitignore d04ec58472 Remove more intermediates. 4 months ago
.gitmodules d997772488 use https:// url for gitmodules 9 months ago
.ruby-version 5fe26b4ba5 bump ruby version 7 months ago
.travis.yml 1b8efb5255 CI runs SSK tests 2 years ago 77b41a83f4 Creating a new Signal account using the development app 2 months ago 65c323440b update translation location 1 year ago
Gemfile f4d675e952 update ci to use latest XCode / fastlane 2 years ago
Gemfile.lock 2a2f30e2a6 update fastlane 7 months ago
Jenkinsfile 0795fc9118 ci labels PRs with GH title 7 months ago
LICENSE 25d97a1304 Update license. 2 years ago fbfa5e6dee Update 1 year ago
Makefile 78ebb6a570 pristine submodules 3 months ago
Podfile cfb8bda66b fixup Pods 1 month ago
Podfile.lock 68d64cec5c update pods 1 month ago 92fce516cd Revert some of the bigger README changes for now, until we can do a deeper review 2 months ago
SignalServiceKit.podspec 0c8b305906 Respond to CR. 3 months ago

Signal iOS

Signal is a free, open source, messaging app for simple private communication with friends.

Available on the App Store

Also available on Android and Desktop.


For troubleshooting and questions, please visit our support center or unofficial community forum.

Contributing Bug Reports

We use GitHub for bug tracking. Please search existing issues and create a new one if the issue is not yet tracked. For Android users, please use the Signal for Android issue tracker.

Contributing Translations

Help us translate Signal! The translation effort happens on Transifex.

Contributing Code

Instructions on how to setup your development environment and build Signal-iOS can be found in Other useful instructions for development can be found in the Development Guide wiki page. We also recommend reading the contribution guidelines.

Contributing Ideas

Have something you want to say about Signal Foundation projects or want to be part of the conversation? Get involved in the community forum.

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 for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.


Licensed under GPLv3

Copyright 2014-2019 Open Whisper Systems

Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc., registered in the U.S. and other countries.