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Cybersecurity · head to head

ProtonVPN vs ThetaRay

ProtonVPN logo

ProtonVPN

Cybersecurity

High-speed Swiss VPN that safeguards your privacy

From
Free
Rated
-
Full reviewWebsite
ThetaRay logo

ThetaRay

Cybersecurity

Unsupervised AI transaction monitoring for cross-border and correspondent banking

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only ProtonVPN has a free tier, so it costs nothing to try first.
  • Each has a real cost: ProtonVPN free plan limited to one device at a time; ThetaRay unsupervised models are harder to justify to an examiner than explicit rules, and some regulators still expect documented threshold logic, which can force you to run both systems.
  • They diverge on capability: ProtonVPN covers No-logs policy, ThetaRay covers Unsupervised detection.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which ProtonVPN and ThetaRay actually diverge.

Attributes where ProtonVPN and ThetaRay differ
AttributeProtonVPNThetaRay
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
PlatformsWindows, macOS, Linux, iOS, AndroidWeb
Founded2014Unknown

Identical on both: user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ProtonVPN

  • No-logs policy
  • Secure Core
  • Kill Switch
  • DNS leak protection
  • Tor over VPN
  • Split tunneling
  • NetShield ad-blocker
  • VPN Accelerator

Only in ThetaRay

  • Unsupervised detection
  • Cross-border focus
  • Sanctions screening
  • Alert triage
  • Customer risk scoring
  • Cloud native

What people use each for

The jobs each tool is most often brought in to do.

ProtonVPN

  • Privacy-focused browsing without subscription costnot ThetaRay
  • Multi-device protection with Plus plan supporting 10 devicesnot ThetaRay
  • Integrated access to Proton email and cloud services via Unlimited plannot ThetaRay

ThetaRay

  • A correspondent bank that cannot see the ultimate originator and needs behavioural signals rather than counterparty listsnot ProtonVPN
  • A cross-border payments fintech whose rules engine produces more alerts than its compliance team can clearnot ProtonVPN
  • A bank under a regulatory consent order needing demonstrable improvement in detection within a fixed periodnot ProtonVPN
  • A payment institution entering a high-risk corridor where existing thresholds were calibrated on domestic trafficnot ProtonVPN

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ProtonVPN

  • Free plan limited to one device at a time
  • Free plan restricted to 10 countries with random selection
  • Pricing amounts not clearly published; shown as variable

ThetaRay

  • Unsupervised models are harder to justify to an examiner than explicit rules, and some regulators still expect documented threshold logic, which can force you to run both systems.
  • The alert reduction claim depends heavily on your data, so a parallel run is essential and adds months and cost before you can decommission the incumbent.
  • Coverage is strongest in cross-border and correspondent flows; institutions whose risk is domestic retail fraud will find the fit weaker than a general-purpose monitoring platform.
  • It is a smaller vendor than the incumbents, so integration connectors into legacy core banking systems are often bespoke work rather than a supported adapter.
  • Model retraining and tuning are vendor-led, which means changing detection behaviour is a support conversation rather than something your own analysts can do that afternoon.

Pricing, plan by plan

ProtonVPN

Free

No published plan breakdown. See the ProtonVPN review.

ThetaRay

On request
  • ThetaRay Sonar$undefined/year
    • Priced by monitored transaction volume and number of monitored entities
    • SaaS on Azure with regional data residency options
    • Parallel run and model tuning included in onboarding

Which should you pick?

Choose ProtonVPN if

  • You need no-logs policy.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want secure core.
ProtonVPN review

Choose ThetaRay if

  • You need unsupervised detection.
  • You also want cross-border focus.
ThetaRay review

Questions people ask

Is ProtonVPN or ThetaRay better?
Neither clearly leads. ProtonVPN starts at Free and ThetaRay at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ProtonVPN or ThetaRay?
ProtonVPN has a free tier; the other does not. Paid plans start at Free for ProtonVPN and On request for ThetaRay.
Does ProtonVPN or ThetaRay run on more platforms?
ProtonVPN runs on Windows, macOS, Linux, iOS, Android. ThetaRay runs on Web.
Can I use ProtonVPN for free?
Yes. ProtonVPN has a free tier, so you can try it without paying. ThetaRay starts at On request.
What is ProtonVPN best used for?
ProtonVPN is most often used for privacy-focused browsing without subscription cost, multi-device protection with plus plan supporting 10 devices, integrated access to proton email and cloud services via unlimited plan. Of those, privacy-focused browsing without subscription cost and multi-device protection with plus plan supporting 10 devices are not what ThetaRay is typically brought in for.
What can ProtonVPN do that ThetaRay cannot?
ProtonVPN covers No-logs policy, Secure Core, Kill Switch, DNS leak protection. ThetaRay covers Unsupervised detection, Cross-border focus, Sanctions screening, Alert triage.

Answered from the vendors’ own pages

ThetaRay: Does it replace a rules engine entirely?

Rarely on day one. Most institutions run it alongside existing rules during a parallel period, and some keep specific regulator-mandated rules permanently.

ThetaRay: Where is the data processed?

SaaS runs on Microsoft Azure with regional deployment options, which is the mechanism for meeting data residency conditions in regulated markets.

ThetaRay: Is sanctions screening included?

Screening is available on the same platform but licensed as part of the commercial package rather than bundled by default. Confirm it is in your quote.

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