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Psiphon vs Ultrasurf: catalog facts
Psiphon	Ultrasurf
Freemium Free to connect, with an optional subscription or PsiCash for ad-free, faster connections.	Free Free to download and use.
Windows, Android, iOS	Windows
Several blocking-resilient transports that keep working where standard VPNs fail Free to use with no payment needed	Traffic is disguised as ordinary TLS web traffic Small, portable download that needs little setup
The free tier shows ads and runs at lower speeds Traffic passes through servers run by Psiphon	Closed source, so its security claims cannot be independently audited Focused on getting past censorship rather than full VPN features
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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