Proton VPN review 2027: the audit-backed privacy pick

Proton VPN builds its case on proof rather than promises: five annual no-logs audits with every report published in full, open-source apps, and a pricing page that prints the renewal price next to the promo price. See how that record stacks up against every provider we cover in our full VPN rankings. Every number below was checked against Proton’s own pages on 23 Jul 2026; third-party test results are attributed to the outlet that ran them.

How private is Proton VPN really?

Proton AG operates from Geneva, Switzerland, and states that under the current Swiss legal framework it has no logging requirements. The company says its no-logs policy has been tested in more than 400 legal cases without any logs available to hand over. That courtroom record matters more than any marketing page: it is the difference between a policy that reads well and one that has held under pressure.

One design choice needs explaining. Proton does not run RAM-only servers, which most rivals treat as a baseline trust signal. Proton argues that RAM-only adds no real security and instead runs bare-metal servers with LUKS AES-256 full-disk encryption and the encryption keys stored off-site. You do not have to accept that argument — plenty of security people prefer diskless designs — but Proton published its reasoning in the open, which is more than most vendors offer for their infrastructure choices.

Privacy and trust scores 9.5/10. Jurisdiction, audit cadence, and the legal track record all point the same way; the missing half point is the RAM-only debate, where Proton’s position is an argument, not an equivalence everyone accepts.

What do the audits actually cover?

Securitum audited Proton VPN’s no-logs infrastructure in 2026 — the fifth consecutive annual engagement, following reports covering 2022 through 2025. Proton links the complete 2026 report from its announcement, alongside the earlier four.

The openness is the real differentiator. NordVPN’s sixth no-logs engagement (Deloitte, report issued 12 Dec 2025) is readable only after logging in to a Nord Account, and Surfshark’s 2025 Deloitte report is available only to logged-in users in the account area. Proton’s reports are open to anyone, including people still deciding whether to pay. For what these engagements do and do not prove, see our guide to no-log VPN audits.

Is the pricing honest?

Mostly — with one number you need to see before checkout. Verified against the live pricing page:

Plan	First term	Renews at
Free	$0	$0
VPN Plus, monthly	$9.99 for the first month	$9.99 every month
VPN Plus, 2-year	$71.76 for 24 months ($2.99/mo)	$83.88 every 12 months ($6.99/mo)

The monthly plan renews at exactly what you signed up for. The two-year deal is where you need to pay attention: $2.99 a month is a first-term promo, and renewal works out to $6.99 a month — more than double. Proton does print the renewal price on the plan card, which beats the category norm for disclosure, but the headline figure is still the small one. That gap is why price honesty scores 7.5/10, the lowest dimension in this review: disclosed, yet wide.

The 30-day money-back guarantee is a full refund, confirmed in the pricing FAQ. Proton also sells broader tiers — Proton Unlimited, Duo, and Family — but published prices for those vary between review sources, so this review scores VPN Plus, the VPN-only plan.

Here is the same billing term across Proton’s closest rivals:

Two-year deals vs what renewal actually costs (as of 23 Jul 2026)

Provider	Intro price	Upfront first term	Renews at	Refund window
Proton VPN	$2.99/mo	$71.76 / 24 months	$83.88/yr (~$6.99/mo)	30 days
NordVPN	$3.49/mo	$94.23 / 27 months	$139.08/yr (~$11.59/mo)	30 days
Surfshark	$2.49/mo	$67.23 / 27 months	$79.00/yr	30 days
Mullvad	$5.71/mo flat	$5.71 / month	Same price — never changes	14 days

Two readings of that table. Surfshark undercuts Proton both upfront and at renewal, and NordVPN costs more on both. Mullvad is the only provider here with no intro-rate game at all — a flat €5 a month (shown as $5.71) since 2009. Proton’s $83.88 renewal lands mid-pack: not the bargain the banner suggests, but well under NordVPN’s $139.08.

What do you get for the money?

Ten simultaneous connections on VPN Plus, against a network of 20,677 servers across 148 countries and 191 locations — counted from the live server-list page, though Proton’s marketing rounds it down to “140+ countries.”

Three protocols ship in the apps: WireGuard, OpenVPN over UDP or TCP, and Stealth, Proton’s custom obfuscation protocol for networks that block standard VPN traffic. WireGuard is available on Windows, macOS, Linux, Android, and iOS. All of Proton’s apps are open source, so the code behind those clients is inspectable, not a black box.

Third-party reviews fill in the day-to-day picture. TechRadar flags slow OpenVPN speeds, occasional kill-switch incompatibilities, and the absence of post-quantum encryption — a protection NordVPN added to its NordLynx protocol in 2025. The practical rule from that reporting is simple: stay on WireGuard.

Features score 8.5/10. The protocol set, platform coverage, and open-source clients are strong; 10 devices trails the unlimited-device policy at Surfshark, and post-quantum encryption is still missing.

How is it for streaming, torrenting, and gaming?

The evidence here is third-party and mixed, so weigh it accordingly. Security.org reports access to more than a dozen Netflix libraries on paid plans. TechRadar found that NetShield, Proton’s built-in ad and tracker blocker, can interfere with streaming until you switch it off. For torrenting, PCWorld lists P2P as allowed on paid plans.

Speed results cluster around “fast on WireGuard”: PCMag recorded a 2.8% download-speed drop in its testing, while Wired reported roughly a 15% average slowdown. PCMag also reports very high latency despite excellent upload performance — and latency matters more than raw bandwidth for gaming or remote desktop, so treat Proton as unproven there. In restrictive countries, Security.org puts the odds of a working connection at roughly 50%, even with Stealth available.

Streaming and use-case fit scores 8.0/10 on that record: real Netflix results, offset by NetShield quirks, high-latency reports, and coin-flip reliability in censored regions.

The verdict

Dimension	Weight	Score
Privacy & trust	30%	9.5
Features	25%	8.5
Price honesty	20%	7.5
Streaming & use-case fit	15%	8.0
Transparency	10%	10.0

Weighted total: 8.7/10. Transparency scores a 10 because every claim that matters is verifiable without paying: full audit reports in the open, open-source apps, renewal prices on the plan card, and published engineering reasoning even for unpopular choices like skipping RAM-only servers.

Who should choose something else

You want anonymity, not just privacy. Mullvad takes a randomly generated account number instead of an email address and charges a flat €5 a month (shown as $5.71) at every term length — no sales, no intro rates. The trade is a smaller footprint: 584 servers in 50 countries, 5 devices, and a 14-day refund window. The full head-to-head is in Proton VPN vs Mullvad compared.

You want the newest transport security. NordVPN runs RAM-only servers and added post-quantum encryption to NordLynx in 2025 — two boxes Proton leaves unticked. It costs more where it counts: the two-year deal renews at $139.08 a year, and its audit reports are login-gated. The trade-offs are laid out in NordVPN vs Proton VPN compared.

You want a capable VPN for $0. Proton is already the strong answer: the free plan has no data cap and no ads, limited to 1 device at medium speed on servers in 10 randomly selected countries. How it stacks up against other free tiers is in our best free VPN roundup.

Frequently asked questions

Is Proton VPN safe to use?

Its no-logs infrastructure has passed five consecutive annual audits by Securitum (2022–2026), all published in full, its apps are open source, and Proton says more than 400 legal cases have ended with no logs to hand over. Proton states that Swiss law imposes no logging requirements on it.

How fast is Proton VPN?

Third-party results are strong on WireGuard: PCMag recorded a 2.8% download-speed drop and Wired reported roughly a 15% average slowdown. TechRadar found OpenVPN noticeably slower, so WireGuard is the protocol to use. PCMag also flags very high latency, which matters for gaming.

Is Proton VPN's free plan worth it?

It is one of the few free plans with no data cap and no ads, and it keeps the same audited no-logs policy as the paid tiers. The limits: 1 device, medium speed, and servers in 10 randomly selected countries.

How many devices can use Proton VPN at once?

VPN Plus secures 10 devices at a time. The free plan is limited to 1 device.

Does Proton VPN work with Netflix?

Security.org reports access to more than a dozen Netflix libraries on paid plans. TechRadar notes that NetShield, the built-in ad and tracker blocker, can interfere with streaming until you switch it off.

Does Proton VPN have a money-back guarantee?

Yes — 30 days on paid plans, and Proton's pricing FAQ confirms it is a full refund, not a prorated one.

Does Proton VPN work in China?

Not reliably. Security.org puts the chance of a working connection in restrictive countries like China at roughly 50%. The Stealth obfuscation protocol is built for blocked networks, but plan a backup if the connection is critical.

Can you torrent with Proton VPN?

Yes — PCWorld lists P2P as allowed on paid plans. The free plan, with 1 device and medium speed, is not suited to it.