Flagmint
A/B TESTING

Try new features
with confidence

Run controlled experiments to validate product decisions. Split traffic, track conversions, and make data-driven decisions.
Checkout Flow Test
Running
Variant A (Control)
50%
2,450 users12.4% conversion
Variant BWinner
50%
2,520 users15.8% conversion
Product Features

Everything you need to experiment

Powerful experimentation tools designed for product teams who want reliable, actionable results.

Traffic Splitting

Automatically split traffic between variants with configurable percentages for statistically valid results.

Conversion Tracking

Track any event as a conversion goal. Monitor click-through rates, signups, purchases, and custom events.

Statistical Analysis

Get confidence intervals and significance calculations automatically. Know when you have a clear winner.

Audience Targeting

Run experiments on specific user segments. Test features with power users before general rollout.

Multi-Variant Tests

Go beyond A/B with A/B/C/D testing. Compare multiple variations simultaneously.

Real-Time Results

Watch results update in real-time as users interact with your experiments. No waiting for batch processing.

Use Cases

A/B testing for every team

Whether you're a solo entrepreneur or a large enterprise, Flagmint streamlines your workflow with an easy-to-use, maintainable system.

Beta Testing Programs

Identify and target power users or early adopters for beta feature access. Gather feedback before wider rollout.

Feature Optimization

Test different implementations of a feature to find what drives the best user engagement and retention.

Pricing Experiments

Safely test pricing changes with a subset of users before rolling out to your entire customer base.

react
npm install flagmint-react-sdk

import { useFlag, FlagmintProvider } from 'flagmint-react-sdk';

export default function App({ children }) {
  return (
    <FlagmintProvider
      options={{
        apiKey: process.env.NEXT_PUBLIC_FLAGMINT_API_KEY,
        transportMode: 'auto',
        context: {},
        onError: (error) => {
          console.error('Flagmint SDK Error:', error);
        }
      }}
    >
      {children}
    </FlagmintProvider>
  );
}
  
export default function CheckoutButton() {
  const { isEnabled, loading } = useFlag("new-checkout", false);
  
  if (loading) return <Spinner />;
  
  return (
    <button className={isEnabled ? "new-style" : "classic"}>
      {isEnabled ? "Try New Checkout" : "Checkout"}
    </button>
  );
}
SDKS & APIS

Integrate in minutes

Our SDKs are designed to get you up and running fast. Install, initialize, and start using feature flags in under 5 minutes.

Segmentation Results

W1
W2
W3
W4
4,970
Total Users
+27.4%
Improvement
95%
Confidence
ANALYTICS

Results you can trust

Our statistical engine automatically calculates significance, accounts for sample size, and alerts you when you have enough data to make a confident decision.

  • Real-time segment size estimation
  • Sample size calculator
  • Export data to your analytics stack
REVIEWS

Loved by engineers and product teams

Flagmint's SDK is the cleanest I've used. We went from zero to production feature flags in under an hour.

SC
Sarah Chen
Senior Engineer at Raycast

The TypeScript support is phenomenal. Autocomplete for flag names and values has saved us from countless bugs.

MJ
Marcus Johnson
Tech Lead at Loom

Finally, a feature flag tool that doesn't slow down our builds. Edge evaluation is a game-changer.

ER
Emily Rodriguez
Staff Engineer at Vercel
FAQ

Frequently asked questions

Popular questions users ask about Flagmint

Ready to start experimenting?

Run your first A/B test today. No credit card required.