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Proton VPN vs Astrill VPN: catalog facts
Proton VPN	Astrill VPN
Freemium The free tier has no data cap but limited countries and speeds. Paid plans add more…	Paid Paid subscription, with a VIP plan and business options.
Windows, macOS, Linux, Android, iOS, Browser extension	Windows, macOS, Linux, Android, iOS
A free tier with no data cap and no advertising Clients are open source on every platform and independently audited	StealthVPN protocol designed for restrictive networks Apps for desktop, mobile and routers, including Linux
An account is required, even for the free tier Free tier covers few countries and slows down at peak times	Proprietary protocol and closed source apps Requires a paid subscription
Downloadable app, Browser extension	Downloadable app, Hosted service
Open source	Closed source
License: GPL-3.0	License not stated
Account needed	Account needed
Works offline	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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