Type-safe
feature flags
Develop, test and release new features faster and more safely with the most powerful feature flag and A/B testing platform. Optimized for TypeScript, Next.js and Vercel Edge Config.
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Optimized for Next.js
No juggling different SDKs for the client and the server. Install one TypeScript SDK that "just works" on both the client and the server and is ready for the new App Router paradigm with React Server Components.
No cumulative layout shift, no flickers, no out-of-sync client hydration, no page load delay. Instantly initialize the SDK on the client from server props on the first render.
No latency in Vercel's edge environment. Instantly initialize the SDK on the server from Vercel Edge Config.
No flaky preview environments shared by all your developers. Get an isolated branch in Hypertune for every Vercel Preview Deployment to safely test flag changes.
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Custom, powerful targeting and A/B testing
No struggling to target the users you want. Use custom properties in your flag targeting.
No stitching together feature flags and A/B tests in your code. Embed A/B tests directly in your flag targeting logic, to seamlessly roll out and A/B test new features.
No struggling to A/B test multiple features at once. Reuse a single A/B test across multiple flags to roll them out in sync and measure their cumulative impact.
No ceilings on your targeting logic. Express any condition with our powerful configuration language.
Blazing-fast, Rust-based SDKs with local flag evaluation
No network latency to evaluate flags. Type-safe SDKs for JavaScript, TypeScript, Python, Go, Rust, Ruby and more. All built with a blazing-fast, memory-safe Rust core for local flag evaluation with zero latency.
No plumbing flags from the backend through to the frontend. SDKs for all major frontend frameworks.
Git version control and isolated branches
No painfully debugging what combination of flag changes broke your product. A single Git history for all your flags together to pinpoint and revert bad changes.
No shared "preview environment" that drifts from production. Create isolated branches in Hypertune to safely test flag changes. Get a Hypertune branch for each Vercel Preview Deployment.
No accidentally breaking production. Create pull requests and require approvals before merging them.
End-to-end type-safety
No "Uncaught ReferenceError: flag is not defined". No raw strings, typos or struggling to find flag references. Get auto-generated type-safe code for all your flags.
No polluting your codebase with stale flags. Remove their definitions, regenerate the code and fix all the type errors to safely remove usages.
No accidentally using invalid properties in the flag targeting UI. Define custom targeting properties in your strongly typed schema for type-safe access in the targeting UI.
Granular permissions
No worrying if your teammates will mess up your flag logic. Set granular permissions on what they can edit.
Granular analytics
No guessing if your targeting logic is working. See granular analytics on how often each targeting rule is evaluated.
Complete configuration management
No struggling with bad combinations of flag values. Merge related boolean flags into a single enum flag.
Group related flags into a single object flag. Embed targeting logic within nested object fields.
No stitching together your feature flags with your billing and subscription plan system. Manage billing and subscription plan logic directly in Hypertune too.
No wasting engineering resources on simple copy changes. Manage in-app copy directly in Hypertune with logic for localization, A/B testing and AI-powered personalization.
