2. Threema
Rating: 4.5
Although a surprising contender on our list, Threema has many features that make it a desirable app for secure communication. It offers full encryption and options to set your messages to be deleted as soon as they are sent and read. Besides security features, Threema offers a lot more like the ability to conduct pools or to quickly and silently answering the messages.
ra2studio/Shutterstock.com
