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WeChat vs Threema: catalog facts
WeChat	Threema
Free Free to download and use.	Paid A one-time purchase is required. Business plans are separate.
Windows, macOS, Android, iOS	Windows, macOS, Linux, Android, iOS, Web
Very large user base, especially in China Chat, calls, social feed and payments in one app	No phone number or email required; the ID is random Apps are open source and the company is based in Switzerland
Closed source and run by a single company Many features go beyond messaging, which makes the app large	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
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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