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Signal vs Olvid: catalog facts
Signal	Olvid
Free Free; developed by a nonprofit funded by grants and donations	Free The homepage presents Olvid as free messaging for everyone and does not list prices.
Android, iOS, Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS
End-to-end encryption on every message and call using the open source Signal Protocol No ads, affiliate marketers or tracking	No phone number, email or personal details needed to use it Never requests access to the address book
Requires a phone number that can receive an SMS or phone call to register Desktop app requires Signal to be installed on a phone first	Contacts must also install Olvid to chat with you Pricing and licensing details are not stated on the homepage
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-3.0	License not stated
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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