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Cybersecurity · head to head

Ory Kratos vs Rock Solid

Ory Kratos logo

Ory Kratos

Cybersecurity

Headless identity and user management API

From
Free
Free plan
Yes
Full reviewWebsite
Rock Solid logo

Rock Solid

Government

Parks and Recreation Management

From
$350/month
Free plan
No
Full reviewWebsite

The short version

  • Only Ory Kratos has a free tier, so it costs nothing to try first.
  • They diverge on capability: Ory Kratos covers Headless API, Rock Solid covers Program Registration.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Ory Kratos and Rock Solid actually diverge.

Attributes where Ory Kratos and Rock Solid differ
AttributeOry KratosRock Solid
Starting priceFree$350/month
Pricing modelOpen-source self-hosted, with a paid managed networksubscription
Free tierYesNo
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, Ios, Android
CategoryCybersecurityGovernment
FoundedUnknown2001

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

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 Ory Kratos

  • Headless API
  • Self-service flows
  • Multi-factor authentication
  • Pluggable identity schemas

Only in Rock Solid

  • Program Registration
  • Facility Scheduling
  • Membership Management
  • Payment Processing
  • Reporting & Analytics
  • Payment Gateways
  • QuickBooks
  • Marketing Tools

What people use each for

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

Ory Kratos

  • Products needing complete control over the look and flow of authenticationnot Rock Solid
  • Applications that must not hand user identity data to a third partynot Rock Solid
  • Teams building identity as infrastructure across several servicesnot Rock Solid

Rock Solid

  • Citizen Servicesnot Ory Kratos
  • Records Managementnot Ory Kratos
  • Public Safetynot Ory Kratos
  • Civic Engagementnot Ory Kratos

Where each one falls short

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

Ory Kratos

  • Headless means you build every screen, which is significant work compared with a hosted login page
  • More moving parts than a monolithic IAM: Kratos handles identity, and OAuth2 needs Ory Hydra alongside
  • Documentation assumes real familiarity with identity concepts and is not a gentle introduction
  • Self-hosting identity carries the security and availability burden that hosted providers absorb

Rock Solid

Nothing recorded yet. See the Rock Solid review.

Pricing, plan by plan

Ory Kratos

Free
  • Self-hostedFree
    • Full identity server
    • All flows
    • Community support

Rock Solid

$350/month
  • Recreation Management$350/month
    • Program Registration
    • Facility Scheduling
    • Payment Processing

Which should you pick?

Choose Ory Kratos if

  • You need headless api.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want self-service flows.
Ory Kratos review

Choose Rock Solid if

  • You need program registration.
  • You work on Web, Ios, Android.
  • You also want facility scheduling.
Rock Solid review

Questions people ask

Is Ory Kratos or Rock Solid better?
Neither clearly leads. Ory Kratos starts at Free and Rock Solid at $350/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ory Kratos or Rock Solid?
Ory Kratos has a free tier; the other does not. Paid plans start at Free for Ory Kratos and $350/month for Rock Solid.
Does Ory Kratos or Rock Solid run on more platforms?
Ory Kratos runs on Linux, Docker, Kubernetes, Self-hosted. Rock Solid runs on Web, Ios, Android.
Can I use Ory Kratos for free?
Yes. Ory Kratos has a free tier, so you can try it without paying. Rock Solid starts at $350/month.
What is Ory Kratos best used for?
Ory Kratos is most often used for products needing complete control over the look and flow of authentication, applications that must not hand user identity data to a third party, teams building identity as infrastructure across several services. Of those, products needing complete control over the look and flow of authentication and applications that must not hand user identity data to a third party are not what Rock Solid is typically brought in for.
What can Ory Kratos do that Rock Solid cannot?
Ory Kratos covers Headless API, Self-service flows, Multi-factor authentication, Pluggable identity schemas. Rock Solid covers Program Registration, Facility Scheduling, Membership Management, Payment Processing.

Answered from the vendors’ own pages

Ory Kratos: Is Ory Kratos free?

Yes, open source and free to self-host. Ory Network is a paid managed service.

Ory Kratos: What does headless mean here?

Kratos provides identity flows as APIs and no user interface. You build the login, registration and recovery screens yourself.

Ory Kratos: Does Kratos do OAuth2?

No. Kratos handles user identity; OAuth2 and OpenID Connect provider functionality is Ory Hydra, a separate component.

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