Signal is a free and open source messaging app for simple private communication with friends.
Also available on Android and Desktop.
For troubleshooting and questions, please visit our support center or unofficial community forum.
The best way to submit a bug report or support request is via the Support Center. Signal iOS doesn't collect any analytics or telemetry, and we rely on your feedback to help us troubleshoot and fix problems when something isn't working correctly.
Instructions for how to configure your development environment and build Signal iOS can be found in BUILDING.md. We also recommend reading the contribution guidelines.
Have something you want to say about Signal Foundation projects or want to be part of the conversation? Get involved in the community forum.
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.
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 2013-2025 Signal Messenger, LLC
Licensed under the GNU AGPLv3: https://www.gnu.org/licenses/agpl-3.0.html
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