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For MerchantsUnderstanding Facebook Tracking

Understanding Facebook Tracking

How Facebook Ad Tracking Works (And Why It's Broken)

The iOS 14.5 Problem

In April 2021, Apple released iOS 14.5 which requires apps to ask permission before tracking users. Result: 96% of users click "Ask App Not to Track"

This broke Facebook's ability to track conversions from iPhone users, which is 40-50% of most stores' traffic.

How Harper Fixes This:

  1. Server-Side Tracking: We track on your server, not in the browser
  2. First-Party Data: Using your customer data (email, phone) for matching
  3. FBCLID Capture: Tracking the Facebook Click ID before cookies are blocked
  4. Conversion API: Sending events directly to Facebook servers

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