OpenFeature-compatible feature management
Ship features with a switch, not a deploy.
FeatOnOff gives your team typed feature flags, per-environment control, percentage rollouts, and anonymous evaluation stats — with drop-in OpenFeature SDKs for web, mobile, and backend.
Free while in beta · no credit card required
Everything you need to flag with confidence
A focused toolkit for the whole flag lifecycle — create, target, roll out, and evaluate.
Typed feature flags
Boolean, string, number, and object flags with named variants and a default. The type is enforced end to end.
Per-environment control
Every flag is configured independently per environment. Flip it on in staging without touching production.
Percentage rollouts
Release to a slice of your users with stable-hash targeting keys. The rest keep getting the default variant.
Evaluation API keys
Read-only, per-environment keys — shown once on creation and revocable at any time.
OpenFeature-native
Evaluate over the OFREP protocol with drop-in SDKs. Copy-paste snippets live right inside the dashboard.
Apps & environments
Group flags by app and spin up as many environments as you need — production, staging, and beyond.
Evaluation stats
See how every flag performs per environment: daily evaluation trends, variants served, unique users, and errors — over 7, 14, or 30 days.
Anonymous by design
Stats are aggregate only, counted from the opaque targeting keys your app sends. We gather no private information — nothing is linked to a person or a device.
Start flagging in minutes.
Create an account, add your first app, and ship your first flag today — free for the whole beta.