revenuecat-identify-user: connect RevenueCat to your auth system

Use this skill when the user wants to call logIn / logOut on the RevenueCat SDK so that their app users line up with RevenueCat subscribers. This skill does not cover initial SDK setup (see integrate-revenuecat), purchases (revenuecat-purchase-flow), or gating (revenuecat-entitlements-gate).

1. Detect the platform

Inspect the working directory and pick the first match, from top to bottom:

1. React Native: package.json has a react-native-purchases entry, or react-native as a dependency → read platforms/react-native.md. If expo is also a dependency, note it as an Expo project.
2. Flutter: pubspec.yaml exists at the project root → read platforms/flutter.md.
3. Kotlin Multiplatform: build.gradle.kts contains a kotlin { … } multiplatform source sets block, or depends on com.revenuecat.purchases:purchases-kmp* → read platforms/kmp.md.
4. Android (native): build.gradle(.kts) applies com.android.application (and is not KMP) → read platforms/android.md.
5. iOS (native): Package.swift, *.xcodeproj, *.xcworkspace, or Podfile at the project root → read platforms/ios.md.

If several match (e.g. an ios/ folder inside a Flutter project), pick the outermost project, the one that owns the build. If still ambiguous, ask the user which platform they want to configure.

2. Shared concepts (all platforms)

• Anonymous by default. Before logIn is called, RevenueCat assigns a stable anonymous ID prefixed $RCAnonymousID:. Purchases made while anonymous are aliased onto the real appUserID the first time logIn is called with it, so there is no "lost purchase" risk from letting users buy before signing in.