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

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