@jwildeboer @adriangadientbruegger @AboutSignalNL Please don't intermingle privacy and security. They are two different pair of shoes that should be tackled hand in hand. #Threema comes without propietary libraries if installed over F-Droid (security), doesn't require a phone number (privacy) and doesn't rely one AWS, Google etc. (privacy and/or security, be my guest). #Signal uses post-quantum encryption (security) and is free to use (accessibility). None is better than the other. It all boils down to your and your contacts priorities. Such discussions just scare away WhatsApp users and the like.
Statements based upon:
https://www.messenger-matrix.de/messenger-matrix-en.html
PS: Threema uses PFS https://threema.ch/en/faq/perfect_forward_secrecy