Softwr

Cybersecurity · head to head

Doppler vs Sardine

Doppler logo

Doppler

Cybersecurity

Secrets management for humans and AI agents

From
Free
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

  • Only Doppler has a free tier, so it costs nothing to try first.
  • Each has a real cost: Doppler developer tier limited to 3 free users with per-user fees beyond that; 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: Doppler covers Secrets management, Sardine covers Device intelligence.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Doppler and Sardine actually diverge.

Attributes where Doppler and Sardine differ
AttributeDopplerSardine
Starting priceFreeOn request
Pricing modelUnknownquote
Free tierYesNo
PlatformsWeb, CLI, Cloud, On-PremisesWeb, iOS, Android

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 Doppler

  • Secrets management
  • Automated credential rotation
  • Dynamic secrets
  • Audit logging
  • SAML SSO
  • Role-based access control
  • Config syncing
  • AI agent support

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.

Doppler

  • Managing API keys for distributed development teamsnot Sardine
  • Securing credentials for AI agents without per-agent feesnot Sardine
  • Automating credential rotation for compliancenot Sardine
  • Centralizing secrets across cloud and on-premise infrastructurenot Sardine

Sardine

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

Where each one falls short

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

Doppler

  • Developer tier limited to 3 free users with per-user fees beyond that
  • Team plan pricing ($21/user/mo) adds cost for large teams
  • 90-day activity log retention may be insufficient for long-term audits
  • Enterprise plan requires custom pricing conversation

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

Doppler

Free
  • DeveloperFree
    • 3 free users
    • Then $8 per additional user per month
    • Doppler CLI access
  • Team$21/month
    • Per-user pricing
    • Change requests
    • SAML SSO
  • Enterprise$undefined/custom
    • Custom pricing scaled to team size
    • On-prem or cloud deployment
    • Custom permissions

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 Doppler if

  • You need secrets management.
  • You want to start without paying.
  • You work on Web, CLI, Cloud, On-Premises.
  • You also want automated credential rotation.
Doppler 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 Doppler or Sardine better?
Neither clearly leads. Doppler starts at Free and Sardine at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Doppler or Sardine?
Doppler has a free tier; the other does not. Paid plans start at Free for Doppler and On request for Sardine.
Does Doppler or Sardine run on more platforms?
Doppler runs on Web, CLI, Cloud, On-Premises. Sardine runs on Web, iOS, Android.
Can I use Doppler for free?
Yes. Doppler has a free tier, so you can try it without paying. Sardine starts at On request.
What is Doppler best used for?
Doppler is most often used for managing api keys for distributed development teams, securing credentials for ai agents without per-agent fees, automating credential rotation for compliance, centralizing secrets across cloud and on-premise infrastructure. Of those, managing api keys for distributed development teams and securing credentials for ai agents without per-agent fees are not what Sardine is typically brought in for.
What can Doppler do that Sardine cannot?
Doppler covers Secrets management, Automated credential rotation, Dynamic secrets, Audit logging. Sardine covers Device intelligence, Behaviour biometrics, Scam detection, Onboarding risk scoring.

Answered from the vendors’ own pages

Doppler: Do AI agents count toward my user limit?

No, AI agents and non-human identities receive free access across all Doppler plans, including Developer, Team, and Enterprise.

Source
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.

Doppler: What is the difference between Team and Enterprise plans?

Team plan ($21/user/mo) includes SAML SSO, role-based access controls, and 90-day logs. Enterprise adds custom deployment options, unlimited config syncs, 99.95% SLA, and a dedicated account manager.

Source
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.

Doppler: Can I rotate secrets automatically?

Yes, both Team and Enterprise plans support automatic secret rotation. Developer tier supports manual rotation only.

Source
Sardine: Is pricing published?

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

Share

Related pages

More on Doppler

More on Sardine

Keep looking

Other head to heads