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0xchat vs Olvid: catalog facts
0xchat	Olvid
Free The homepage does not list any price or paid tier.	Free The homepage presents Olvid as free messaging for everyone and does not list prices.
Android, iOS	Windows, macOS, Linux, Android, iOS
No phone number or email address needed, only a Nostr private key End-to-end encrypted direct messages and private groups	No phone number, email or personal details needed to use it Never requests access to the address book
Losing the private key means losing the identity Contacts need a Nostr client to reach you	Contacts must also install Olvid to chat with you Pricing and licensing details are not stated on the homepage
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account 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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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