Compare software

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

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