Threema is the world’s best selling secure messenger and keeps your data out of the hands of All private persons. I like everything in Threema. This app’s approaches arre towards data security and the official stance on privacy.
The user interface is clean and simple. It’s all good. Regardless of the Internet connection, almost every single call sooner or later drops and is difficult to reestablish. The service can be used completely anonymously.
Threema is open source, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger. With Threema Web, you can also use Threema from your Desktop. Write text and send voice messages
features of Threema
Make voice and video calls
Share videos pictures and locations
Send any type of file