ProtonVPN vs CasperVPN 2026: Servers, Protocols, Pricing — Side by Side
How does CasperVPN compare to ProtonVPN? Honest breakdown of server count, protocols (CasperCloak vs Stealth), pricing, audits, free tier, and Swiss jurisdiction.
CasperVPN Team
May 10, 2026
ProtonVPN vs CasperVPN (2026): Honest Side-by-Side Comparison
This is the comparison page CasperVPN''s own team writes. ProtonVPN is the privacy VPN we respect the most in our category — Swiss jurisdiction, a credible no-logs posture, an actually-usable free tier (one of only two in the consumer market — the other is ours), open-source apps on every platform, and the same parent company as ProtonMail. We are a younger, leaner privacy VPN with a different design philosophy. This page is the most honest competitive analysis on this site precisely because Proton sets the bar.
TL;DR
Pick ProtonVPN if: Swiss jurisdiction matters to your threat model, you want fully open-source apps on every platform, you need a free tier with unlimited data, you want to consolidate Proton Mail + Drive + Calendar + VPN under one bill, or completed annual third-party audits are a hard requirement.
Pick CasperVPN if: you want a one-time lifetime option, post-quantum encryption on your roadmap, an obfuscation protocol available on every server (not a sub-pool), and you can take "we will publish the audit when it is done" on credit.
Server Fleet
ProtonVPN advertises 5,000+ servers across 70+ countries, with a portion of the fleet running on bare metal owned by Proton (their "Secure Core" servers in Switzerland, Iceland, and Sweden). Secure Core routes traffic through privacy-friendly jurisdictions before reaching the exit server, at the cost of additional latency.
CasperVPN runs 13 servers across 12 countries on 5 continents. Every server is owned and operated by us — we do not lease capacity from third-party datacenters where logs may be visible to the host. Server locations as of May 2026: United States (multiple), Germany, France, Netherlands, United Kingdom, Singapore, Japan, Canada, Brazil, Australia, Hong Kong, and Mexico. The full fleet is RAM-only — every reboot wipes state to disk-zero.
The trade-off is honest: ProtonVPN wins on geographic coverage, and Secure Core is genuinely a feature we do not have. CasperVPN''s claim is that we control every endpoint in our fleet — which Proton also does on their owned Secure Core nodes, but not on their full fleet.
Free Tier — A Real Comparison
This is one of the only categories where the comparison is between two providers that actually offer a free tier worth using.
ProtonVPN Free:
CasperVPN Free:
The two free tiers are designed for different jobs. ProtonVPN Free is the right choice if you need a no-cost VPN you can leave running 24/7 — the unlimited data is unmatched in the category. CasperVPN Free is the right choice if you want to evaluate the full feature set (including CasperCloak obfuscation) before paying — the 2 GB cap means we are using free as a try-before-you-buy tier, not a permanent free tier.
Neither approach is wrong. They are different product decisions and we are open about that.
Protocols and the CasperCloak Difference
ProtonVPN supports WireGuard, OpenVPN (UDP and TCP), IKEv2, and Stealth — their proprietary obfuscation protocol designed to defeat DPI on networks that block standard VPN traffic. Stealth is well-implemented and respected in our category. It runs as a server-side mode on a designated server pool.
CasperVPN runs four protocols: WireGuard (vanilla, with our own dynamic key rotation), IKEv2, OpenVPN (UDP and TCP), and CasperCloak — our proprietary obfuscation protocol. CasperCloak is built as a protocol layer rather than a server-side mode, which means every CasperVPN server can serve obfuscated traffic. The architectural difference: a protocol-level transform is harder for DPI to fingerprint than a transport-level wrapper, and the available-on-every-server model means there is no "obfuscated server pool" to overload during censorship spikes.
If you live and work somewhere with active VPN blocking, the relevant comparison is CasperCloak versus Stealth. We cannot publish independent third-party benchmarks yet, but we can tell you that CasperCloak is the protocol our own team uses when traveling. Stealth is the closest competitor in our category in design philosophy — both are built specifically for the high-censorship use case rather than being a feature bolted onto an existing protocol.
A second protocol-layer difference: Quantum Resistance Encryption is on the way to CasperCloak as a hybrid Kyber1024 + X25519 key exchange. ProtonVPN has not announced a post-quantum roadmap as of May 2026, though Proton Mail does ship a post-quantum email feature. If "future-proof against harvest-now-decrypt-later" matters to your threat model, that distinction will grow over the next 24 months.
Pricing
ProtonVPN''s pricing as of May 2026 (US site, 2-year plan, monthly equivalent):
CasperVPN pricing as of May 2026:
Where ProtonVPN wins on price: the 2-year Plus plan at $4.49/month is cheaper than CasperVPN''s annual rate. The Unlimited bundle at $9.99/month is excellent value if you would have paid for Proton Mail, Drive, Calendar, and Pass anyway.
Where CasperVPN wins on price: (1) ProtonVPN has no lifetime tier. (2) CasperVPN''s $149.99 lifetime breaks even at month 30 against ProtonVPN''s 2-year rate and never charges again — over 5 years, the lifetime is roughly half the cost of staying on Plus. (3) The 1-year ProtonVPN Plus rate ($5.99/month) is more expensive than CasperVPN''s annual rate ($5/month).
Audits and Trust
This is the category where ProtonVPN is straightforwardly ahead of every consumer VPN, including us.
ProtonVPN audits:
CasperVPN audits: Zero, as of May 2026. A third-party security audit is on our post-launch roadmap (Cure53 is among the firms we are evaluating; no engagement has been signed yet). When an audit is commissioned and completed, we have publicly committed to publishing the full result, including any negative findings. Our apps are not open source today. We are choosing not to claim "independently audited" or "verified no-logs" until the audit completes. Some VPNs in our category make those claims earlier — we do not.
If a completed third-party audit and open-source apps are hard requirements for you, ProtonVPN is the right answer today. We respect the Proton model and are using it as our reference for what a privacy-respecting VPN provider should publish.
Jurisdiction
ProtonVPN is headquartered in Switzerland, which is outside the 5/9/14 Eyes intelligence-sharing alliances and has strong privacy laws. Switzerland does not require VPN providers to log user activity. Proton has a public history of pushing back against surveillance requests through Swiss courts.
CasperVPN''s operating entity is being formed in a privacy-friendly jurisdiction. We will name it once formation is final and the corporate documents are public — naming a jurisdiction before that point would be marketing fiction. In the interim, our stance is: no activity logs are written to disk anywhere in the fleet, and the fleet is RAM-only.
If Swiss jurisdiction is specifically what you want, ProtonVPN is the answer and there is no path for CasperVPN to compete on that specific axis without changing our domicile.
Streaming, Torrenting, Censorship Bypass
Streaming. ProtonVPN unblocks Netflix, Hulu, BBC iPlayer, Disney+, and most major regional libraries on Plus tier. Free tier does not have streaming-optimized servers. CasperVPN''s 13 servers can unblock Netflix US and a handful of regional libraries; coverage broadens as we add servers, but if multi-region streaming is your primary use case, ProtonVPN has the edge.
Torrenting. Both providers permit P2P traffic on Plus / paid tiers. Neither free tier supports P2P.
Censorship bypass. ProtonVPN''s Stealth and CasperVPN''s CasperCloak target the same use case. Both are well-designed. The architectural difference (Stealth as a server-side mode versus CasperCloak as a protocol layer available on every server) is the technical story; the practical difference depends on the specific network you are trying to bypass. If you are in a country with active VPN blocking, both are reasonable picks and we would not be defensive about losing a customer to Proton on this axis specifically.
Open Source
ProtonVPN ships open-source apps on every platform — iOS, Android, Windows, macOS, Linux, browser. The codebase is on GitHub for independent review.
CasperVPN''s apps are not open source today. We have not committed to a timeline for open-sourcing because we want to ship the audit first and we want our open-source codebase to match what is in the App Store at the time of release. We are stating this gap openly because it is real, not because we plan to sweep it under the rug.
App Quality and Platform Coverage
ProtonVPN ships polished apps on every major platform — iOS, Android, Windows, macOS, Linux (CLI and GUI), browser extensions, Apple TV, and Android TV. The iOS app currently sits at 4.5 stars.
CasperVPN''s iOS app is live in the App Store. Android, Windows, macOS, Linux, and browser extensions are in active development. If you need a polished cross-platform experience today, ProtonVPN is the more complete answer. If you primarily use iOS and the rest is bonus, you can start with us today and pick up the other platforms as they ship.
Bundled Privacy Suite
ProtonVPN''s Unlimited tier ($9.99/month) bundles the VPN with Proton Mail, Drive (encrypted cloud storage), Calendar, and Pass (password manager). For users who would otherwise buy these separately, the bundle math is excellent — cheaper than NordVPN''s Complete tier and substantially more privacy-respecting than the Google or Apple equivalents.
CasperVPN does not bundle email, storage, calendar, or password management. We focus on the VPN. If you already use Proton Mail and want to consolidate, ProtonVPN Unlimited is the obvious choice and we mean that.
When ProtonVPN Is the Right Choice
When CasperVPN Is the Right Choice
Switching from ProtonVPN
If you decide to switch — and we will be candid that ProtonVPN is the most defensible competitor we face on the privacy axis — the practical steps:
When ProtonVPN Is the Right Choice (Anti–Zero-Sum)
We mean it. ProtonVPN is the closest thing in the consumer VPN market to "the right answer" for users who weight jurisdiction, audits, and open source above everything else. If those are your top three, stay on Proton. The right VPN is the one that fits your threat model, not the one with the loudest marketing.
Bottom Line
ProtonVPN is the safer pick if you want a mature, fully-audited, open-source VPN headquartered in Switzerland with a credible privacy posture, a usable free tier, and an excellent bundled privacy suite. CasperVPN is the right pick if you want a lifetime tier, post-quantum-ready obfuscation, and a provider that is candid about its current limitations rather than performative about being "the best."
Try CasperVPN free — no credit card, no commitment. If we are not the right tool for your threat model, ProtonVPN is the choice we would respect most and we mean that.
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Last updated 2026-05-10. Pricing and feature claims verified against ProtonVPN''s public site and CasperVPN''s own authoritative ASO drop. Where competitor pricing has changed, the public ProtonVPN site is the source of truth.