Privacy
iOS ATT (App Tracking Transparency)
Apple's iOS 14.5+ framework requiring apps to ask permission before tracking users across other apps and websites.
iOS ATT (App Tracking Transparency) is Apple's privacy feature that shows users a popup asking 'Allow [App] to track your activity across other companies' apps and websites?' Most users (70-85%) click 'Ask App Not to Track', blocking the IDFA (Identifier for Advertisers). Impact on Facebook/Instagram ads: Cannot track iOS users who opt out, attribution windows shortened from 28-day to 7-day, conversion data delayed 24-48 hours, and targeting accuracy decreased. Meta estimated ATT cost them $10 billion in 2022. Workarounds: Implement Meta CAPI for server-side tracking, use Aggregated Event Measurement (8 conversion events max), focus on Android users, and shift to first-party data strategies. ATT fundamentally broke mobile app advertising attribution and forced industry toward privacy-first tracking.
Frequently asked questions
What is iOS ATT?+
iOS ATT (App Tracking Transparency) is Apple's privacy feature introduced in iOS 14.5 that requires apps to ask permission before tracking users across other apps and websites. Most users (60-80%) opt out, preventing advertisers from tracking their behavior and conversions.
How does iOS ATT affect Facebook ads?+
iOS ATT reduces Facebook's ability to track conversions by 30-50% on iOS devices. This leads to under-reported conversions, less effective ad targeting, and difficulty optimizing campaigns. Meta recommends implementing CAPI (server-side tracking) to recover lost conversion data.
How can I fix iOS ATT attribution loss?+
Fix iOS ATT attribution loss by: implementing Meta CAPI for server-side tracking, using Aggregated Event Measurement (AEM) for iOS campaigns, shortening attribution windows to 7-day click, focusing on click-only conversions, and using first-party data for targeting.