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Cybersecurity · head to head

ExpressVPN vs Sardine

ExpressVPN logo

ExpressVPN

Cybersecurity

Consumer VPN registered in the British Virgin Islands, owned by Kape Technologies since 2021, with repeated third-party audits.

From
$6.67/month
Rated
-
Full reviewWebsite
Sardine logo

Sardine

Cybersecurity

Device intelligence and behaviour biometrics for fraud and compliance

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ExpressVPN ownership passed in 2021 to Kape Technologies, formerly Crossrider, whose earlier browser extension platform was widely used to distribute adware, and Kape also owns VPN review publications, so nominally independent rankings a buyer consults may originate inside the same corporate group.; Sardine signal quality depends on the SDK being embedded in your own web and mobile clients, so fraud improvements become dependent on your app release cycle and any coverage gap is a blind spot.
  • They diverge on capability: ExpressVPN covers TrustedServer, Sardine covers Device intelligence.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which ExpressVPN and Sardine actually diverge.

Attributes where ExpressVPN and Sardine differ
AttributeExpressVPNSardine
Starting price$6.67/monthOn request
Pricing modelsubscriptionquote
PlatformsWeb, Desktop, Mobile, ApiWeb, iOS, Android
Founded2009Unknown

Identical on both: free tier (No), 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 ExpressVPN

  • TrustedServer
  • Lightway protocol
  • Repeated external audits
  • Network Lock
  • Split tunnelling
  • Aircove router
  • Threat Manager
  • Private DNS

Only in Sardine

  • Device intelligence
  • Behaviour biometrics
  • Scam detection
  • Onboarding risk scoring
  • AML transaction monitoring
  • Dispute and chargeback handling
  • Rules editor

What people use each for

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

ExpressVPN

  • A buyer who wants the largest available body of published third-party audit evidence behind a no-logging claimnot Sardine
  • Households wanting whole-network coverage through a router without configuring firmware by handnot Sardine
  • Frequent travellers who need connections that survive switching between mobile data and hotel Wi-Fi without droppingnot Sardine
  • Non-technical users who want the kill switch and DNS handled correctly by default rather than configurednot Sardine

Sardine

  • A neobank losing money to authorised push payment scams where the customer genuinely approved the transfernot ExpressVPN
  • A crypto exchange trying to detect accounts being operated by remote access rather than by their ownernot ExpressVPN
  • A fintech seeing synthetic identity signups that pass document verification but share device characteristicsnot ExpressVPN
  • A lender wanting first party fraud signals at application time that a credit bureau file does not containnot ExpressVPN

Where each one falls short

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

ExpressVPN

  • Ownership passed in 2021 to Kape Technologies, formerly Crossrider, whose earlier browser extension platform was widely used to distribute adware, and Kape also owns VPN review publications, so nominally independent rankings a buyer consults may originate inside the same corporate group.
  • In 2021 the company's then chief information officer was named in a United States Department of Justice deferred prosecution agreement over work for a foreign government's offensive cyber programme and remained in post, which is a governance fact that sits uncomfortably alongside a product sold entirely on trust.
  • Audits are point-in-time engagements against an agreed scope, so they establish that specified servers and code matched the stated policy when examined, not that the infrastructure behaves the same way today or under different ownership.
  • Several country locations are virtual, meaning the hardware physically sits elsewhere, and after India's 2022 directive requiring VPN providers to retain subscriber data ExpressVPN withdrew its Indian servers, so an Indian connection is routed through hardware in another country, which matters if you need genuine in-country routing.
  • There is no port forwarding and no dedicated IP option, so seeding torrents, hosting a service behind the tunnel and any inbound connection do not work, and users who need those capabilities have to use a different provider.

Sardine

  • Signal quality depends on the SDK being embedded in your own web and mobile clients, so fraud improvements become dependent on your app release cycle and any coverage gap is a blind spot.
  • Behavioural and device telemetry collection needs a documented lawful basis under GDPR, and EU privacy reviews frequently delay rollouts that were scoped as engineering work.
  • Pricing is per session or per active user, so a consumer product with many low value sessions pays in proportion to traffic rather than to fraud exposure.
  • As a younger private company it lacks the enforcement-tested audit history that a bank examiner expects, which makes it a harder sell inside a regulated bank than inside a fintech.
  • It is strongest on session-time signals and weaker as a system of record for long horizon AML typologies, so larger institutions end up running it alongside a traditional monitoring platform rather than instead of one.

Pricing, plan by plan

ExpressVPN

$6.67/month
  • 1 Month$12.95/month
    • 8 devices
    • 94 countries
    • Unlimited bandwidth
  • 12 Months$6.67/month
    • All features
    • 3 months free
    • Best value
  • 6 Months$9.99/month
    • All features
    • 30-day guarantee

Sardine

On request
  • Sardine$undefined/year
    • Priced per user session or per monthly active user
    • Annual contract with volume commitment
    • SDK for web, iOS and Android

Which should you pick?

Choose ExpressVPN if

  • You need trustedserver.
  • You work on Web, Desktop, Mobile, Api.
  • You also want lightway protocol.
ExpressVPN review

Choose Sardine if

  • You need device intelligence.
  • You work on Web, iOS, Android.
  • You also want behaviour biometrics.
Sardine review

Questions people ask

Is ExpressVPN or Sardine better?
Neither clearly leads. ExpressVPN starts at $6.67/month and Sardine at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ExpressVPN or Sardine?
ExpressVPN starts at $6.67/month and Sardine at On request.
Does ExpressVPN or Sardine run on more platforms?
ExpressVPN runs on Web, Desktop, Mobile, Api. Sardine runs on Web, iOS, Android.
What is ExpressVPN best used for?
ExpressVPN is most often used for a buyer who wants the largest available body of published third-party audit evidence behind a no-logging claim, households wanting whole-network coverage through a router without configuring firmware by hand, frequent travellers who need connections that survive switching between mobile data and hotel wi-fi without dropping, non-technical users who want the kill switch and dns handled correctly by default rather than configured. Of those, a buyer who wants the largest available body of published third-party audit evidence behind a no-logging claim and households wanting whole-network coverage through a router without configuring firmware by hand are not what Sardine is typically brought in for.
What can ExpressVPN do that Sardine cannot?
ExpressVPN covers TrustedServer, Lightway protocol, Repeated external audits, Network Lock. Sardine covers Device intelligence, Behaviour biometrics, Scam detection, Onboarding risk scoring.

Answered from the vendors’ own pages

ExpressVPN: Who owns ExpressVPN?

Kape Technologies, which acquired it in 2021. Kape was previously named Crossrider and also owns CyberGhost, Private Internet Access and Zenmate, along with the review sites vpnMentor and Wizcase.

Sardine: Does Sardine do document verification?

It focuses on device, behavioural and transaction signals, and integrates identity verification providers rather than being one. Treat it as complementary to a KYC vendor.

ExpressVPN: Is the British Virgin Islands jurisdiction actually useful?

It has no mandatory data retention law and is outside the Five, Nine and Fourteen Eyes arrangements, which is the reason it was chosen. It also means limited practical legal recourse for a subscriber, so the jurisdiction protects the company's ability to hold no data rather than protecting you against the company.

Sardine: What does it need from us to work?

An SDK in your web and mobile applications plus transaction feeds. Without the client side collector you lose the signals that differentiate it.

ExpressVPN: Has the no-logs claim been audited?

Yes, repeatedly. PwC and KPMG have examined the no-logging claims and the TrustedServer architecture, and Cure53 has reviewed the applications, extension and protocol. The reports are published.

Sardine: Is pricing published?

No. It is quoted, typically per session or per monthly active user with an annual volume commitment.

ExpressVPN: Can I torrent with it?

Yes, peer-to-peer traffic is permitted on the network, but there is no port forwarding, so you can download but you cannot accept inbound connections and seeding performance suffers as a result.

ExpressVPN: Does it work in China or similar networks?

Sometimes, using obfuscated connection modes, but no provider can guarantee this and availability changes without warning. Treat it as best effort and have a fallback.

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