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Olvid vs Threema: catalog facts
Olvid	Threema
Free The homepage presents Olvid as free messaging for everyone and does not list prices.	Paid A one-time purchase is required. Business plans are separate.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS, Web
No phone number, email or personal details needed to use it Never requests access to the address book	No phone number or email required; the ID is random Apps are open source and the company is based in Switzerland
Contacts must also install Olvid to chat with you Pricing and licensing details are not stated on the homepage	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.