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ConfigCat vs React

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
React logo

React

Web Development

A JavaScript library for building user interfaces

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • 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.; React jSX requires a build step using Webpack, Babel, or other transpilers to convert to browser-executable JavaScript
  • They diverge on capability: ConfigCat covers Feature flags and configuration, React covers Component-based architecture.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ConfigCat and React actually diverge.

Attributes where ConfigCat and React differ
AttributeConfigCatReact
Pricing modelPer month by feature flag and environment countfree
PlatformsWeb, API, iOS, Android, Node.js, .NET, Java, Python, GoWeb, Mobile
CategoryDeveloper ToolsWeb Development
FoundedUnknown2013

Identical on both: starting price (Free), free tier (Yes), 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 React

  • Component-based architecture
  • Virtual DOM
  • JSX syntax
  • Unidirectional data flow
  • React Hooks
  • Server-side rendering
  • Hot reloading
  • Developer tools

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 React
  • A team that wants every engineer, product manager and support agent to have a login without paying per seatnot React
  • Decoupling deployment from release with percentage rollouts and a kill switch, without buying an experimentation platformnot React
  • A small team that needs ten flags permanently and can run indefinitely on the free tiernot React

React

  • Web application developmentnot ConfigCat
  • Single-page applicationsnot ConfigCat
  • Interactive user interfacesnot ConfigCat
  • Mobile app developmentnot ConfigCat
  • Component librariesnot 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.

React

  • JSX requires a build step using Webpack, Babel, or other transpilers to convert to browser-executable JavaScript
  • Routing and state management are separate dependencies, not included in core library
  • Configuration complexity for advanced features like server-side rendering without a meta-framework
  • Requires choosing and configuring build tools and development environment setup

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

React

Free
  • Open SourceFree
    • Component-based architecture
    • Virtual DOM
    • JSX syntax

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 React if

  • You need component-based architecture.
  • You want to start without paying.
  • You work on Web, Mobile.
  • You also want virtual dom.
React review

Questions people ask

Is ConfigCat or React better?
Neither clearly leads. ConfigCat starts at Free and React at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ConfigCat or React?
ConfigCat starts at Free and React at Free.
Does ConfigCat or React run on more platforms?
ConfigCat runs on Web, API, iOS, Android, Node.js, .NET, Java, Python, Go. React runs on Web, Mobile.
Can I use ConfigCat for free?
Both have a free tier, so you can try either at no cost before committing.
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 React is typically brought in for.
What can ConfigCat do that React cannot?
ConfigCat covers Feature flags and configuration, Percentage rollouts, Targeting rules and segments, Unlimited seats. React covers Component-based architecture, Virtual DOM, JSX syntax, Unidirectional data flow.

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.

React: Is React free to use commercially?

Yes. React is distributed under the MIT open-source license, which permits free usage for both personal and commercial projects without licensing fees or restrictions.

Source
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.

React: Does React support TypeScript?

Yes. React works seamlessly with TypeScript for type-safe component development. TypeScript provides static type checking for React components, props, and state, improving code reliability and developer experience.

Source
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.

React: Do I need a build step to use React?

If you use JSX, yes. JSX requires transpilation by a build tool like Webpack and Babel before browsers can execute it. However, React can be used without JSX by calling React.createElement directly, which does not require a build step.

Source
ConfigCat: How fast does a flag change take effect?

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

React: Can I build offline-capable applications with React?

Yes. React supports building Progressive Web Apps (PWAs) with service workers and IndexedDB for offline functionality. Create React App includes service worker setup, though it must be manually enabled for production use.

Source
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