Threema is an encrypted instant messaging application for iOS, Android and Windows Phone. Developed by Threema GmbH
License: Commercial
Disa is a versatile and customizable messaging app that allows users to integrate multiple messaging services, while Threema is a privacy-focused, paid app that emphasizes security and user anonymity with features like secret chats and two-factor authentication. Both apps support end-to-end encryption and group chats, but Threema has a stronger emphasis on privacy.