Free-tier feature flags

Semaphr

Semaphr is a mobile app management platform for iOS, Android, and React Native apps. It lets developers block specific app versions, force updates, and send in-app messages when a release needs to be stopped or users need to be notified.

Statsig

Statsig is a product development platform that combines experimentation, feature flags, product analytics, session replay, web analytics, and infrastructure analytics in one service. It provides SDKs ...

ConfigCat

ConfigCat is a hosted feature flag and remote configuration service for teams. Applications use its SDKs to download config JSON from the ConfigCat CDN and evaluate feature flags locally from cache, w...

RevenueCat

RevenueCat is a subscription management platform that helps app businesses power purchases, manage customer data, and grow revenue across iOS, Android, Smart TV, and the web.

Toggled.dev

Toggled.dev is a feature toggles management platform for controlling feature release, rollout, and rollback across applications. It supports multi-regional operation, user segmentation, session sticki...

GrowthBook

GrowthBook is a warehouse-native platform for experimentation, feature flags, and product analytics. It connects to a company’s data warehouse and supports A/B tests, feature flag management, product analytics, and SDK-based evaluation across web, mobile, server, and edge environments.

LaunchDarkly

LaunchDarkly is a runtime control platform for feature flags, feature management, experimentation, and release governance. It helps teams ship software safely, target experiences to specific users or segments, and adjust behavior in production without redeploying code.

Abby

Abby is a type-safe feature flag and remote configuration service with SDKs for React and Next.js. It supports server-side rendering and static site generation, includes environment-specific flag values, and provides optional devtools for debugging feature flags and remote config variables.

Hypertune

Hypertune is a feature flag and experimentation platform with type-safe SDKs, Git-based version control, analytics, and app configuration. It provides flag evaluation, targeting rules, experiments, ev...

Flagsmith

Flagsmith is an open source feature flag and remote configuration service. It provides APIs and SDKs for web, mobile, and server-side applications so teams can enable or disable features, target users or segments, and change feature values without redeploying code.

DevCycle

DevCycle is a feature flag and feature management platform with OpenFeature-native support. It provides SDKs, APIs, a CLI, and a web dashboard for creating, targeting, rolling out, and monitoring flags across client-side, server-side, web, and mobile applications.