Review Signal Private Messenger
Totally private text and picture messages
Author: Jay Feldman
Date: 02 Jul 2015, tested on Samsung SM-G920F Galaxy S6
Interesting functionality, various features, simple interface
All users need this installed for total privacy, limited features, old fashioned design
TextSecure Private Messenger is a text messaging app with added security and privacy settings beyond your device's default messaging app. This one boasts total privacy with all pictures and text, as they are never saved on the host's server. This one is worth checking out.
TextSecure Private Messenger displays in portrait and landscape, and can send messages to any phone, regardless of if they have this app installed or not, however, only devices with this app installed are totally private and secure, while all others are subject to the same privacy intrusion as any other messaging app. You can send invites to friends who you'd like to communicate securely with, and then all messages sent between you will be safe and private. This is ideal if you're into corporate espionage, cheating on a girlfriend or perhaps are a legitimate spy. Whatever your disposition, there's many applications and keeping your personal life private has its upside.
Once you're up and running, the app looks like a run of the mill messaging app. It opens to a standard messaging interface, and all you gotta do is tap the pencil icon on the lower right to begin composing a message. The app will tell you when a message is not going to be secure, so you'll know ahead of time. There's an icon on the top right that opens a menu with selections for, new group, mark all read, import/export, my identity key and settings. There interface has day and night modes, which is nice if you're into battery saving, because black backgrounds ignite fewer screen pixels and use less power.
TextSecure Private Messenger is a decent messaging app with some interesting privacy abilities. There's lots of reasons why someone might want an app like this and this one functions well. It doesn't currently work with tablets.