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Signal - Private Messenger

By Open Whisper Systems

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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 your friends at once, and share media all 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 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 you can have private conversations with all your friends at once. Not only are the messages encrypted, but the Signal server never has access to any group metadata such as the membership list, group title, or group icon.

• Fast - The Signal protocol is designed to operate in the most constrained environment possible. Using Signal, messages are instantly delivered to friends.

• Speak Freely - Make crystal-clear phone 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 (@WhisperSystems) for all of the latest updates and announcements.

What's New in Version 2.6.12

• Added censorship circumvention for users with Signal numbers from Oman
• Improved message reliability for censorship circumvention
• Re-centered search bar in invite flow
• Fixed database issue clearing data & crashing on re-registration

iPhone Screenshots

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Customer Reviews

Private but not entirely

Considering you are required to use a phone number to login/authenticate your account it isn't really private because anyone who has your phone number knows you're using the application. That's not privacy, that's a blatant phone book! Also, I've been asking for a couple of years but no changes have been made to the notification sound. It's simple, OWS: change the default sound to something less annoying/obtrusive or give us custom sounds, please.

Ignore the Wire shill, Signal is great!

They also provided the encryption behind Whatsapp.

Signal recently received a subpoena for information on two users. There was no real info available to provide the government due to Signal's encryption and policies. Signal is very private and secure!

Does a good job

Seems to do a good job from what I can tell. Obviously I'm not going through this servers and seeing what kind of information is leftover or how their encryption works, but it seems to do a fine job what it is. No-frills nothing fancy, just messaging that is encrypted end to end.

Signal - Private Messenger
View in iTunes
  • Free
  • Category: Social Networking
  • Updated:
  • Version: 2.6.12
  • Size: 40.3 MB
  • Languages: English, Albanian, Azerbaijani, Bosnian, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Filipino, Finnish, French, Galician, German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Macedonian, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Shona, Simplified Chinese, Slovenian, Spanish, Swedish, Thai, Turkish
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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