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Editors' Review

by   / November 23, 2016

Signal Private Messenger for iOS provides end-to-end encrypted chat and voice calls, so you can communicate with friends without worry.


End-to-end encryption: Communications are encrypted end to end, and none of your data is saved on Signal's server.

Screen security: Signal also offers a feature called Screen Security, which prevents anyone from taking screenshots of your messages. To enable this option, go to Settings, Privacy, then Enable Screen Security.

Clear History Logs: Under Settings, you can tap Clear History Logs every once in a while to delete your message, attachment, and call history.

Private or group chat: Signal allows you to create encrypted groups for secret conversations with multiple people. Better yet, the app doesn't retain any group metadata on its server.

Lightning-fast messaging: In testing, messages were delivered almost instantaneously.

Open source: Signal's code is open source, which means that it's available for audit. Check it out at GitHub.


Bare bones messaging: Whereas competing apps enable you to send everything from GIFs and emoticons to voice messages, payments, and location info, Signal only enables you to send texts, photos, and videos.

Poor call quality: In testing, we were not wowed by Signal's lackluster call quality.

Bottom Line

While Signal for iOS isn't as feature-rich as competing apps, it is strong on privacy. So if you want to keep your communications private, then you should definitely give it a try.

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Full Specifications

What's new in version 2.15.3

â?¢ Fixed intermittent crash while scrolling through messages.

â?¢ Fixed source of phantom "New Message" notification.

â?¢ Fixed unintentional call hangup when on shoddy networks.

â?¢ Updated translations.

Other recent changes:

â?¢ Keep group accessible after last message in the group conversation is deleted.

â?¢ Fixed a crash on launch on iOS 8.

â?¢ Fixed disappearing group conversations.

â?¢ Fixed copy/paste of gifs that also contain text/links.

â?¢ Added RTL language support. Email to contribute to translations of RTL languages - Arabic, Hebrew, Persian/Farsi, Urdu.

â?¢ Modified registration view to indicate the need for a cell phone prefix for Mexican phone numbers (+521).

â?¢ Improved UIUX layout glitches for group threads after the first message is sent.

â?¢ Improved registration flow to prevent and fix instances of "one way" messaging with a contact.

â?¢ Removed empty 1:1 conversation threads from displaying.

â?¢ Updated to refresh the inbox view when necessary.

â?¢ Fixed separate crashes for some users on iOS10, when deleting a thread, and updates from older versions of Signal.

â?¢ Changed to prompt for contacts permission when adding unsaved numbers to existing contacts.


Publisher Open Whisper Systems
Publisher web site
Release Date October 10, 2017
Date Added October 10, 2017
Version 2.15.3


Category Internet Software
Subcategory Social Networking Software

Operating Systems

Operating Systems iOS
Additional Requirements Compatible with: iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74

Download Information

File Size 12.95MB
File Name External File


Total Downloads 7,022
Downloads Last Week 1


License Model Free
Limitations Not available
Price Free
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