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

Matthew Chen 5568482e4c "Bump build to" 5 days ago
.github fb3efe3647 Update 7 months ago
Pods @ d74b4688bd cc4d85a91e Encrypted device names. 5 days ago
Scripts eb96eec94a Merge branch 'release/2.32.0' 1 month ago
SettingsBundle 2c18a75d12 Update to the new GitHub organization name 11 months ago
Signal 5568482e4c "Bump build to" 5 days ago
Signal.xcodeproj f7842dd2aa Rework lazy attachment restore. 1 month ago
Signal.xcworkspace 868a35ce4c Add IDE template macro for consistent headers 5 months ago
SignalMessaging 6ece45a2e4 toggle multisend feature flag 1 month ago
SignalServiceKit cc4d85a91e Encrypted device names. 5 days ago
SignalShareExtension 5568482e4c "Bump build to" 5 days ago
ThirdParty 9708a1aeda update WebRTC to M70 2 months ago
fastlane f4d675e952 update ci to use latest XCode / fastlane 1 year ago
protobuf 34a404f589 Clean up ahead of PR. 5 months ago
.clang-format 933281f234 format objc. 2 years ago
.gitattributes 33428d45fd Supporting diffing of localizablestrings. 3 years ago
.gitignore dc8b5fb97f track pod dependencies publicly 11 months ago
.gitmodules d997772488 use https:// url for gitmodules 2 months ago
.ruby-version b88cbef1f0 Bump ruby version to v2.5.0. 3 months ago
.travis.yml 1b8efb5255 CI runs SSK tests 1 year ago f6d78d04b5 removed outdated build instructions. 1 month ago 65c323440b update translation location 4 months ago
Gemfile f4d675e952 update ci to use latest XCode / fastlane 1 year ago
Gemfile.lock e28eb330e0 bundle update 1 month ago
LICENSE 25d97a1304 Update license. 1 year ago fbfa5e6dee Update 7 months ago
Makefile 10af14d965 Remove legacy built in test runner from SSK. 2 months ago
Podfile 46ebe52a27 update pods 2 months ago
Podfile.lock 036c6dca41 Merge branch 'release/2.32.0' 1 month ago 65c323440b update translation location 4 months ago
SignalServiceKit.podspec d6a6024f37 Update PromiseKit 3 months ago

Signal for iOS

Signal is a messaging app for simple private communication with friends.

Available on the App Store


Help us translate Signal! The translation effort happens on Transifex

Contributing Code

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

Contributing Ideas

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


Check out the SignalServiceKit README for details about using SignalServiceKit in your own app.

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.


Copyright 2014-2018 Open Whisper Systems

Licensed under the GPLv3: