Secure Messaging App Signal. It's easy to forward a message on the signal mobile app for android or iphone. Whatsapp was a messaging app first and added the security features later on.
This gives an opportunity for developers to enhance the security features and protocols that make up the signal messaging app. In april 2016, whatsapp implemented a super secure encryption protocol developed by open whisper systems (the company behind secure messaging app signal) across all mobile platforms. It has strong encryption, it's free, it works on every mobile platform, and the developers are committed to keeping it simple and fast by.
The code is available on github.
Signal gives you encrypted messages, as well as voice and video calls. While signal can’t mark messages as unread via its desktop iteration, you can still mark messages as unread in the. The service is fully gdpr compliant. This gives an opportunity for developers to enhance the security features and protocols that make up the signal messaging app.