SKAN 4 vs Apple's Aggregated Advanced Measurement: which postback to design for

SKAN 4 vs Apple's Aggregated Advanced Measurement: which postback to design for

SKAN 4 added tiers and crowd-anonymity gates. The right setup depends on your campaign size.

SKAN 4 multi-postback + fine value
— ✓ Up to three postbacks reveal early/mid/late funnel windows
— ✓ Fine-grained values when you clear the crowd-anonymity threshold
— ✗ Small campaigns get downgraded to coarse or null, the tiers don't trigger

AAM (web-to-app aggregate)
— ✓ Covers Safari-driven app installs SKAN misses
— ✗ Aggregate-only, no per-campaign granularity for bidding

If your campaigns push real daily volume, design for SKAN 4's three-postback windows and map values to your D0/D3/D7 funnel. If you're sub-scale, don't over-engineer fine values you'll never unlock, plan for coarse.

Verdict: SKAN 4 multi-postback for high-volume UA, coarse-value design for small campaigns, AAM only for web-sourced installs.
Best for: UA managers rebuilding conversion schemas for iOS scale.