Berty vs Threema

Berty has no write-up on Specifiction yet; its figures are above.

Threema is a paid messaging service for private and business communication, supporting text and voice messages, voice and video calls, group calls, media sharing and file transfers. It can be used without a phone number or email address, and contact synchronization is optional. End-to-end encryption covers messages, media, calls, profile pictures, group names and group-member lists. The apps are open source, with repositories for Android, iOS, macOS, Windows, Linux and Threema Web. The regular desktop app and web client require a mobile device with Threema installed and activated. Threema operates its own servers in Zurich data centers of an ISO 27001-certified colocation partner. It says its apps receive regular audits by recognized security experts, including Cure53 audits in 2020 and 2024. Business tools include Gateway integrations, Work APIs and Broadcast features such as feeds, distribution lists, bots and managed group chats. Private use costs $6, paid once, with price varying by app store and country; Core starts at $3 a month billed annually. A 30-day trial is listed.