Implementing Mixpanel on iOS (Swift & SwiftUI)

On iOS, Mixpanel belongs in a thin analytics layer, not scattered track calls in every view. Wrap the SDK behind a small protocol so SwiftUI views and UIKit controllers emit events through one API. That makes refactors easier and keeps property names consistent when you add watchOS or extensions later.

Install the official Mixpanel Swift SDK via SPM or CocoaPods, initialize once at app launch with your project token, and enable automatic collection only where it matches your privacy policy. Register super properties for app version, build, environment, and subscription tier so every event carries context without repeating properties.

Identity is where many integrations break: identify with a stable user ID after login, alias or merge carefully from anonymous IDs, and reset on logout so the next user on a shared device does not inherit the previous profile. Pair this with user profile updates when plan, locale, or experiment cohort changes.

For SwiftUI, prefer tracking in view models or intent handlers (button actions, navigation) rather than onAppear on large containers, otherwise you double-count screens. Name events in past tense (signup_completed) and use snake_case properties aligned with your Android app.

Revenue and subscriptions: fire explicit events for trial start, conversion, renewal, and cancellation. If you use RevenueCat, map its delegate callbacks to Mixpanel events and people properties. Validate with Mixpanel’s live view and a debug build before release.