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Threema Work vs Threema: catalog facts
Threema Work	Threema
Paid Paid business licences, with a 30-day free trial.	Paid A one-time purchase is required. Business plans are separate.
macOS	Windows, macOS, Linux, Android, iOS, Web
End-to-end encrypted messaging for business use Focus on data protection and compliance	No phone number or email required; the ID is random Apps are open source and the company is based in Switzerland
Paid licences aimed at organisations, not individuals Separate from the consumer Threema app	A one-time purchase is required for each platform Smaller user base than the mainstream encrypted messengers
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.