Proton VPN

A free plan with no data cap, five annual Securitum no-logs audits, and a Stealth protocol for getting past VPN blocks.

Facts checked November 2026. Sources are listed at the end.

Company: Proton AG
Based in: Switzerland
Latest audit of note: Securitum no-logs audit, 2026
Free plan: Yes
Money-back window: 30 days

Who it suits

People who want to try a reputable VPN for free, or who want a provider with a long run of published no-logs audits and a full 30-day refund on paid plans.

Less suited to: Anyone who picked Proton mainly for its Swiss base: citing proposed Swiss surveillance rules, Proton has begun moving physical infrastructure to Germany and Norway, starting with its Lumo AI service.

Jurisdiction

Proton AG is a Swiss company registered in Plan-les-Ouates, Geneva.^[1]

Audits

Securitum · May 2026
Fifth consecutive annual no-logs audit, with fieldwork on May 20 to 27, 2026. It covered production VPN servers from both the free and paid tiers, their configuration and deployment, and internal procedures, and found no evidence of logging of browsing, DNS queries, destinations, traffic content or identifying connection metadata. The auditor describes it as a point-in-time review of a sample of servers.^[3]
Securitum · August 2025
Verification of Proton VPN's no-log policy on production servers, chosen at random by the auditors, running on bare-metal hardware Proton owns.^[4]
Securitum · 2022 to 2024
Earlier annual no-logs audits, each linked from Proton's audit page.^[2]

Notable incidents and changes

2021
Proton Mail (not the VPN) was compelled by a binding Swiss order, following a French police request through Europol, to log a French activist's IP address. Proton's CEO said Swiss law can't be used the same way to force VPN logging.^[5]
2025
Proton began moving much of its physical infrastructure out of Switzerland, citing legal uncertainty over proposed changes to the Swiss surveillance ordinance, while saying it is not leaving Switzerland.^[6]

Protocols

WireGuard (UDP and TCP), Stealth (designed to hide that you're using a VPN), and Smart Protocol, which picks one automatically. OpenVPN is offered in the Linux app and IKEv2 on macOS.^[7]

Free plan, refunds and price

Free plan on one device with no data limit and no ads; free users connect to servers in a limited set of countries.^[9]

Full refund if you cancel within 30 days of your first purchase, once per user. Purchases through app stores follow the store's rules, and cash or bank-transfer payments aren't refunded.^[1]

VPN Plus from $3.49 a month on the 2-year plan on the provider's site as of November 2026 (billed up front; renewal pricing differs).^[8]

Read the terms on Proton VPN's own site before you buy.

Visit Proton VPN