Proton VPN vs Mullvad: The Privacy Purists' Final

Proton VPN vs Mullvad is the connoisseur's matchup: two open-source, audit-first providers that privacy-focused readers shortlist against each other rather than against the big brands. The short answer: Proton VPN wins on usability, device count and a free tier, while Mullvad wins on anonymous sign-up and radical minimalism. Both are excellent and honest; this is a choice between two good philosophies, not good versus bad.

Worth stating plainly: Mullvad runs no affiliate program, so we earn nothing by recommending it, while Proton VPN does pay a commission. We've tried to keep that out of the scoring entirely — where Mullvad wins a round, it wins it. Nothing here is a speed test we ran; it's built on audits, protocols and documented design. Because both providers are unusually transparent, this is also one of the few matchups where you can independently verify almost every claim either side makes.

Anonymity and sign-up

Mullvad wins this round on design. It gives you a random account number with no email required and accepts cash, so it can hold essentially nothing that identifies you. Proton VPN uses a normal account (an email address), which is standard and safe but inherently less anonymous than Mullvad's model.

That said, Proton's account system unlocks its free tier and integrates with its wider privacy suite (Mail, Drive), which many users value. The question is whether you want to minimise identity at sign-up above all else — in which case Mullvad's approach is unmatched — or accept a normal account for a broader, more usable service.

Jurisdiction and transparency

Proton VPN edges the jurisdiction round: Switzerland has strong privacy law and sits outside the Eyes alliances, though Proton is moving some infrastructure to Germany and Norway after a Swiss surveillance ordinance. Mullvad is in Sweden, a 14 Eyes member, mitigated by holding no user data.

On transparency the two are level and both exceptional: both publish 100% open-source apps and commission repeated independent audits — Proton's fifth no-logs review by Securitum in August 2025, Mullvad's ongoing work with firms like X41 and Assured across 2025–26. This is the rare matchup where both sides clear the highest verifiability bar.

Free tier and usability

Proton VPN wins here. Its free plan offers unlimited data with no ads and the same no-logs protection, which makes it the easiest 'try before you pay' route in privacy VPNs; Mullvad has no free tier. Proton's apps are also more full-featured for newcomers, with streaming support and Secure Core.

Mullvad's usability is deliberately spartan — it does one thing, a fast private tunnel, and doesn't clutter the app with extras. For a technical user that clarity is a plus; for someone who wants a free option or streaming, Proton is the friendlier landing spot.

Protocols and defences

Both are WireGuard-first, open source and quick, and we publish no benchmarks. Mullvad's standout is DAITA, which adds cover traffic to defend against AI-guided traffic-analysis — a serious privacy feature. Proton's standout is Stealth (obfuscation for restrictive networks) plus Secure Core multi-hop routing. Different tools for slightly different threat models; both are strong.

The choice of defence maps neatly to intent. If your worry is a sophisticated adversary correlating traffic patterns, Mullvad's DAITA is the more advanced answer. If your worry is getting a working connection past a censor or a hostile network, Proton's Stealth and Secure Core are aimed squarely at that. Neither leaves the fundamentals out — kill switch, leak protection and strong ciphers are standard on both.

Devices and pricing

Proton VPN allows 10 devices to Mullvad's 5, so it scales better across a household. On price, Mullvad charges a flat €5 per month with no discounts — you always know the cost — while Proton offers a free tier plus paid plans that discount on longer terms. If you want a $0 option, Proton wins; if you want flat, honest pricing with no promos, Mullvad's model appeals.

Neither plays aggressive dark-pattern pricing games, which is part of why privacy-conscious buyers trust both. Decide on whether the free tier and device count (Proton) or the account-number anonymity and minimalism (Mullvad) matter more to you — that's the real fork here.

Proton VPN vs Mullvad: the verdict

Take Proton VPN if you want strong, verifiable privacy that still streams, scales to 10 devices and offers a free tier; take Mullvad if anonymous sign-up and radical minimalism are the whole point. There's no affiliate link for Mullvad because it runs no program — you'd sign up directly on its site. For Proton you can start (free or paid) via Proton VPN (an affiliate link, disclosed; it doesn't tilt the verdict toward Proton).

Compare the full field in our VPN comparisons hub, or see how Proton fares against the market leader in Proton VPN vs NordVPN.