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Add to SafariWhen comparing Threema vs Gajim, the Slant community recommends Threema for most people. In the question“What are the best cross-platform encrypted messaging apps?” Threema is ranked 9th while Gajim is ranked 13th. The most important reason people chose Threema is:
Registration is handled by random generated IDs. No phone number needed.
Specs
Question Ranking
Pros
Pro Registration without phone number
Registration is handled by random generated IDs. No phone number needed.
Pro Encrypted communication
Provides complete end-to-end encryption.
Pro Company behind Threema is based in Switzerland
Pro Servers in Switzerland
Privacy laws protect the data Threema has.
Pro Supports encrypted group chats
Pro Provides a web client
You can control and message with friends via Threema Web, the official web client for Threema.
Pro Ability to send pics and videos
Threema supports sending media messages such as video, pics and even voice messages.
Pro Group chat polls
Pro Allows verification of contacts identity via QR Code
Pro OMEMO encryption available as a plug-in
Pro Probably the only Windows client that supports server message history
Cons
Con Not free
Unlike many other options Threema is not free as it costs $1.99 for the app.
Con Single device only
You cannot use multiple devices to send messages. However, it does have message mirroring on a web client.
Con No cloud sync
E2E encryption means no cloud syncing of messages.
Con Chat logs are in SQLite DB
Plaintext (or XML/markup) logs are not available.
Con User interface looks dated
Con OMEMO not natively supported
Requires plug-in.
Con Chat logging enabled by default
Problematic for encrypted chats.
