Privacy is possible. Signal makes it easy.
* Say Anything - Send high-quality group, text, picture, and video messages, all without SMS and MMS fees.
* Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.
* Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.
* Stay Secure - We cannot hear your conversations or see your messages, and no one else can either. No exceptions. You can even tap and hold on a contact's name to see advanced identity verification options. Everything in Signal is always end-to-end encrypted and painstakingly engineered in order to keep your communication safe.
* Go Fast - Signal is optimized for speed without compromise. Our state-of-the-art Axolotl protocol is unmatched in its performance, strength, and reliability.
* Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
* Get Organized - Unique archive functionality makes it easy to keep track of the conversations that matter to you right now.
* Pay Nothing - Signal is supported by a team of dedicated developers, community donations, and grants. There are no advertisements, and it doesn't cost anything to use.
* View Source - All of our code is free, open, and available on GitHub (https://github.com/WhisperSystems).
* Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.
* Include Everyone - Signal is fully compatible with TextSecure and RedPhone for Android.
Follow us on Twitter (@WhisperSystems) for all of the latest updates and announcements.
- Optimized for iOS 9 including important performance and reliability improvements.
- Quick Replies: reply to messages from your lock screen. (iOS 9 only)
- 3D Touch Support.
- Latest translations.