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Developer Tools · head to head

ConfigCat vs Entrust Identity as a Service

ConfigCat logo

ConfigCat

Developer Tools

Feature flag service priced per flag and environment with unlimited seats and unlimited monthly active users

From
Free
Free plan
Yes
Full reviewWebsite
Entrust Identity as a Service logo

Entrust Identity as a Service

Cybersecurity

Workforce and customer authentication from a certificate authority

From
$2/month
Free plan
No
Full reviewWebsite

The short version

  • Only ConfigCat has a free tier, so it costs nothing to try first.
  • Each has a real cost: ConfigCat there is no experimentation or statistical analysis engine, so teams wanting real A/B tests with significance testing must buy and integrate a separate analytics or experimentation product.; Entrust Identity as a Service the application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.
  • They diverge on capability: ConfigCat covers Feature flags and configuration, Entrust Identity as a Service covers Multi-factor authentication.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which ConfigCat and Entrust Identity as a Service actually diverge.

Attributes where ConfigCat and Entrust Identity as a Service differ
AttributeConfigCatEntrust Identity as a Service
Starting priceFree$2/month
Pricing modelPer month by feature flag and environment countPer user per month
Free tierYesNo
PlatformsWeb, API, iOS, Android, Node.js, .NET, Java, Python, GoWeb, iOS, Android, Windows, Linux
CategoryDeveloper ToolsCybersecurity

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 ConfigCat

  • Feature flags and configuration
  • Percentage rollouts
  • Targeting rules and segments
  • Unlimited seats
  • Global CDN delivery
  • Audit log
  • Public API and webhooks
  • SDKs across languages

Only in Entrust Identity as a Service

  • Multi-factor authentication
  • Single sign-on
  • Adaptive authentication
  • Passwordless login
  • Credential lifecycle
  • Derived PIV credentials
  • Directory integration

What people use each for

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

ConfigCat

  • A consumer or mobile app with millions of users where per-MAU flag pricing would cost more than the flags are worthnot Entrust Identity as a Service
  • A team that wants every engineer, product manager and support agent to have a login without paying per seatnot Entrust Identity as a Service
  • Decoupling deployment from release with percentage rollouts and a kill switch, without buying an experimentation platformnot Entrust Identity as a Service
  • A small team that needs ten flags permanently and can run indefinitely on the free tiernot Entrust Identity as a Service

Entrust Identity as a Service

  • A government agency needing derived mobile credentials from an existing PIV smart card estatenot ConfigCat
  • A bank that must support hardware tokens for corporate treasury users alongside push authentication for staffnot ConfigCat
  • An organisation already buying Entrust certificates that wants credential issuance and authentication from one vendornot ConfigCat
  • A defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorlynot ConfigCat

Where each one falls short

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

ConfigCat

  • There is no experimentation or statistical analysis engine, so teams wanting real A/B tests with significance testing must buy and integrate a separate analytics or experimentation product.
  • Pricing by flag count punishes exactly the hygiene you want: the Pro tier caps at 100 flags, so teams that do not aggressively retire stale flags are pushed to the 325 dollar Smart tier for housekeeping reasons rather than growth.
  • The free tier allows only 2 environments, which does not cover the common development, staging and production split, so almost any real deployment starts on a paid plan.
  • It is a smaller vendor than the category incumbents, so enterprise procurement teams will find less depth in compliance attestations, contractual terms and reference architecture than LaunchDarkly offers.
  • Flag evaluation relies on SDK-side caching of a CDN-delivered config, which is fast but means propagation of a change is eventually consistent rather than instant, something to understand before relying on it as an emergency kill switch.

Entrust Identity as a Service

  • The application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.
  • Developer experience for customer identity use cases is behind the specialists, and teams building consumer signup flows will find the APIs and documentation less complete.
  • Advanced capabilities including adaptive authentication and credential management sit above the published entry price, so the two dollar figure rarely reflects what a regulated buyer actually spends.
  • There are two overlapping products, Identity as a Service and Identity Enterprise, and choosing wrongly at the start means a migration later rather than a licence change.
  • Identity governance, access certification and privileged access are not covered, so an organisation with audit-driven access review requirements needs a second vendor alongside it.

Pricing, plan by plan

ConfigCat

Free
  • Forever FreeFree
    • 10 feature flags
    • 2 environments and 2 products
    • 2 segments
  • Pro$110/month
    • 100 feature flags
    • 3 environments and 3 products
    • Unlimited seats and MAUs
  • Smart$325/month
    • Unlimited feature flags
    • Unlimited environments, products and segments
    • Unlimited seats and MAUs
  • Enterprise$900/month
    • Everything in Smart
    • Enterprise support and controls
    • Unlimited everything on flag counts

Entrust Identity as a Service

$2/month
  • Workforce Standard$2/month
    • Multi-factor authentication
    • Single sign-on
    • Directory integration
  • Higher tiers$undefined/month
    • Adaptive risk-based authentication
    • Certificate and smart card credential management
    • Derived PIV credentials

Which should you pick?

Choose ConfigCat if

  • You need feature flags and configuration.
  • You want to start without paying.
  • You work on Web, API, iOS, Android, Node.js, .NET, Java, Python, Go.
  • You also want percentage rollouts.
ConfigCat review

Choose Entrust Identity as a Service if

  • You need multi-factor authentication.
  • You work on Web, iOS, Android, Windows, Linux.
  • You also want single sign-on.
Entrust Identity as a Service review

Questions people ask

Is ConfigCat or Entrust Identity as a Service better?
Neither clearly leads. ConfigCat starts at Free and Entrust Identity as a Service at $2/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ConfigCat or Entrust Identity as a Service?
ConfigCat has a free tier; the other does not. Paid plans start at Free for ConfigCat and $2/month for Entrust Identity as a Service.
Does ConfigCat or Entrust Identity as a Service run on more platforms?
ConfigCat runs on Web, API, iOS, Android, Node.js, .NET, Java, Python, Go. Entrust Identity as a Service runs on Web, iOS, Android, Windows, Linux.
Can I use ConfigCat for free?
Yes. ConfigCat has a free tier, so you can try it without paying. Entrust Identity as a Service starts at $2/month.
What is ConfigCat best used for?
ConfigCat is most often used for a consumer or mobile app with millions of users where per-mau flag pricing would cost more than the flags are worth, a team that wants every engineer, product manager and support agent to have a login without paying per seat, decoupling deployment from release with percentage rollouts and a kill switch, without buying an experimentation platform, a small team that needs ten flags permanently and can run indefinitely on the free tier. Of those, a consumer or mobile app with millions of users where per-mau flag pricing would cost more than the flags are worth and a team that wants every engineer, product manager and support agent to have a login without paying per seat are not what Entrust Identity as a Service is typically brought in for.
What can ConfigCat do that Entrust Identity as a Service cannot?
ConfigCat covers Feature flags and configuration, Percentage rollouts, Targeting rules and segments, Unlimited seats. Entrust Identity as a Service covers Multi-factor authentication, Single sign-on, Adaptive authentication, Passwordless login.

Answered from the vendors’ own pages

ConfigCat: How is ConfigCat priced?

By feature flag, environment and product count. Seats, monthly active users and flag reads are unlimited on every plan.

Entrust Identity as a Service: Is MFA included or extra?

Multi-factor authentication is included in the workforce bundles rather than sold separately, which is not true of every competitor. Adaptive risk-based authentication sits in higher tiers.

ConfigCat: Is the free tier usable?

For small projects yes, but at 10 flags and 2 environments it will not cover a dev, staging and production setup.

Entrust Identity as a Service: Does it do identity governance?

No. Access certification, role mining and joiner-mover-leaver governance require a separate product such as SailPoint or Saviynt.

ConfigCat: Can it run A/B tests?

It can split traffic, but there is no statistics engine. You need a separate analytics tool to decide a winner.

Entrust Identity as a Service: Why choose this over Okta or Entra ID?

Almost always because of PKI, smart cards or derived credentials. Without that requirement the mainstream platforms are the stronger general purpose choice.

ConfigCat: How fast does a flag change take effect?

SDKs poll and cache, so changes propagate on the polling interval rather than instantly.

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