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Privacy is possible. Signal makes it easy.

Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real-time with all of your friends at once, and share media and other files with complete privacy. The server never has access to any of your communication and never stores any of your data.

• Say Anything - Signal uses an advanced end-to-end encryption protocol that provides privacy for every message every time.

• Open Source - Signal is Free and Open Source, enabling anyone to verify its security by auditing the code. Signal is the only private messenger that uses open source and peer-reviewed cryptographic protocols to keep your messages safe.

• Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.

• Group Chat - Signal allows you to create encrypted groups so that you can have private conversations with all of your friends at once. Not only are the messages encrypted, but the Signal server never has access to any group information like the membership list, group title, or group icon.

• Fast - The Signal protocol is designed to operate in the most constrained environment possible. Messages are delivered quickly and reliably.

• Speak Freely - Make crystal-clear voice and video calls to people who live across town, or across the ocean, with no long-distance charges.

For support, questions, or more information, please visit:

Source code:

Follow us on Twitter (@signalapp) for all of the latest updates and announcements.

What's New

Version 2.22.0

• You can enable an optional Registration Lock PIN that will be required in order to register your phone number with Signal again.
• We resolved another issue that caused profile pictures to flicker. If this was happening to the profile picture of someone you love, hopefully now they can be a solid presence in your life *and* in Signal.
• Some rare background crash scenarios would cause Signal to forget about in-progress draft messages and to launch more slowly during multitasking. Like all good backgrounds, these crashes are now behind us.

Ratings and Reviews

4.3 out of 5

1.1K Ratings

1.1K Ratings

Best Privacy App Yet


This is simply the best privacy app with everything neatly bundled into it. It has a nice authentication feature, sms & mms messaging & disappearing messages with people [to keep them clean if you’d like], calls, and keeps it all private, app switch privacy [keeping the screen blank for privacy while switching apps so wandering eyes cannot see the screen], and many more features packed into this powerhouse. To anyone experiencing any issues with calls, make sure your notifications are on and properly set with the app, and look into the settings in the app itself and it easily shows how to have your calls show up with the name [if you would like to] or just a call without a name. The settings are a breeze and make it very easy to understand.

Very rarely you’ll have to re-register for push notifications, but that’s also very easily accomplished.

If I could rate higher than 5 stars I would. 10 stars out of 5 stars is more like it...

Almost 5 stars


I love everything about Signal EXCEPT the fact you can't remove people from a group chat. My business colleagues and I use Signal mainly for business so when someone is no longer a part of a specific project we're unable to simply remove them from the group chat. You have to create an entirely new chat and add everyone back which is a very annoying process.

Another thing is when someone calls me from Signal, it doesn't show me whose calling unless I specifically have the Signal app open and am on Signal at the moment. I'm not sure if that varies depending on what type of phone someone is using or not but I have an iPhone 6. It would be nice to address that as well if possible.

Excellent App. Needs Mac Desktop App Similar to Telegram

Occasional Insomniac

Can't say enough good about this app. Love it. iPhone = 5 stars. I'd give the Mac desktop 3.5 stars though, because it's just a Chrome extension that is a little buggy, requiring a restart it two nearly every day.

Telegram had a terrific desktop app, but I prefer the Signal system far more, particularly how you can sync your keys so that an encrypted chat with someone can be read from either device. I also prefer that Signal is always encrypted, no other option. I can't think of why I'd want another option.

So, overall, Signal is THE choice. I just wish they'd develop a better Mac Desktop solution.


87.4 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Albanian, Arabic, Azerbaijani, Bosnian, Bulgarian, Burmese, Cambodian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Macedonian, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Shona, Simplified Chinese, Slovenian, Spanish, Swedish, Thai, Traditional Chinese, Turkish
Age Rating
Rated 4+
© Open Whisper Systems


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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