iOS App Tracking Transparency (ATT)

iOS 14+ requires apps that track users across other companies' apps and websites — including AdMob personalized ads — to ask for permission via the system ATT dialog. Without it: ads degrade to non-personalized, eCPM drops dramatically, and Apple rejects the build during review.

When to consult

• Info.plist setup + plugin install: setup.md
• When and how to prompt (timing matters): request-flow.md
• Per-framework integration: framework-snippets.md

Hard rules

• ❌ NEVER prompt on first launch. Apple rejects this. The ATT dialog must come after the user has experienced enough of the app to understand why permission is being requested.
• ✅ Prompt after onboarding completes and before AdMob's first impression.
• ✅ The NSUserTrackingUsageDescription string in Info.plist MUST clearly state how the data is used. Generic placeholders ("We need this to show ads") get rejected.
• ✅ Android is not affected — the ATT plugin no-ops on Android.
• ✅ ATT pairs with ionic-cmp-consent — they cover different jurisdictions (Apple vs EU), and both are required for full ad revenue.

Library

npm install @capacitor-community/app-tracking-transparency
npx cap sync