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Psiphon vs Calyx VPN: catalog facts
Psiphon	Calyx VPN
Freemium Free to connect, with an optional subscription or PsiCash for ad-free, faster connections.	Free Free, funded by Calyx Institute members and donations.
Windows, Android, iOS	Android
Several blocking-resilient transports that keep working where standard VPNs fail Free to use with no payment needed	No account needed No logging, according to the provider
The free tier shows ads and runs at lower speeds Traffic passes through servers run by Psiphon	Only Calyx Institute servers are available Android only
Downloadable app	Downloadable app, Hosted service
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account 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.