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Fast, powerful mobile A/B testing

Optimize Everything

Test and roll out entire features, no matter how custom your app is built. Deliver consistent experiences across web and mobile apps.

Iterate Faster

Make visual changes to your app in real time. No App Store review required. Compatible with both iOS and Android.

Reliable and Trusted

Optimize your app on the #1 experience optimization platform that is already delivering billions of experiences globally.

Visual Editor

Change your interface on the fly without writing a line of code.

Developer
Tools

Optimize code-level variables and roll out entirely new features, no matter how custom your app.

Optimizely Developer Docs

Instant
Rollout

Make visual changes to your app immediately without waiting for App Store review.

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A single A/B and multivariate testing platform for iOS, Android, and the web