One SDK call, and FeatureTrack tells you who used the feature, how often, and what broke — event streams and adoption curves in the same view.
import { track } from "@featuretrack/js"; track("checkout_completed", { feature: "one-click-pay", user: session.userId, props: { cart: 2, currency: "EUR" } });
Ingest 200k events a second with idempotent retries and schema drift warnings.
Every event carries a feature key, so adoption curves build themselves.
Tail production like a log file, filtered by user, flag or environment.
Free for 1M events a month. No card, no sales call.
Start free