Hypertune

Hypertune is the most flexible platform for feature flags, A/B testing, analytics, and app config. Built with full end-to-end type safety, Git-based version control, and local, in-memory flag evaluation. Optimized for Next.js and Vercel.

• Simple — Install one SDK that works across the server and the client, compatible with Server Components and the App Router.

• Seamless — Avoid layout shift, UI flickers, hydration errors, and page load delay.

• Flexible — Create variables like user segments to reuse logic across different feature flags.

• Edge-ready — Vercel’s Edge Config is integrated out of the box, enabling sub-millisecond SDK initialization at the edge, with flag evaluation occurring locally via the SDK. This ensures maximum performance and no impact on your end-user experience or conversion rates.

• Type-safe — Choose between the Hypertune SDK, or Vercel’s Flags SDK with our new provider. Both generate compile-time types for flag keys, return values, input payloads, and analytics events, eliminating a whole class of runtime errors, while enabling safe refactoring and easy maintenance.

• Git-based — Every flag and experiment change creates an atomic commit in the single Git-based history for your Hypertune project, enabling safe rollbacks and auditable diffs. Test flag changes in isolated branches, refactor your project, and carry out schema migrations. Use pull requests to safely review and approve changes made by humans and AI agents.