Another messaging app you don't need
Android 4.3 / Android 4.2.2 / Android 4.2.1 / Android 4.2 / Android 4.1.2 / Android 4.1.1 / Android 4.1 / Android 4.0 , iOS 8.1.2 / iOS 8.1.1 / iOS 8.1 / iOS 8.0.2 / iOS 8.0.1 / iOS 8.0 / iOS 7.0
imo was originally a messaging app that could manage a lot of different social networks and chat apps. It discontinued support for third party messaging in March 2014 and reemerged as a standalone app, offering the same features as other messaging apps.
imo offers chat, video and voice calling, group chats, and photo sharing.
The app is cross platform so you can log into the service on Amazon, Android, and iOS devices.
When chatting, imo secures your chats with SSL/TLS and video calls are encrypted, according to imo.