Playbook: Audit In-App Viewability Before You Pay for 'Viewable' Impressions

Playbook: Audit In-App Viewability Before You Pay for 'Viewable' Impressions

In-app viewability lies more than web. Verify it step by step:
— Confirm the measurement vendor is OM SDK (Open Measurement) integrated, not publisher self-reported
— Check whether the SDK is actually firing — OMID presence in the VAST/ad markup, not just claimed
— Separate display (50% pixels / 1 sec) from video (50% / 2 sec) thresholds in your report
— Pull viewable rate by exchange; a publisher at 99% viewable is reporting, not measuring
— Cross-reference with audibility for video — muted autoplay rewarded skews 'completion'
— Compare measured vs measurable rate; low measurability means blind impressions you're trusting on faith

✓ Exposes self-reported viewability inflation
✓ OM SDK gives a vendor-neutral, MRC-accredited baseline
✗ OM SDK adoption is patchy across smaller in-app exchanges
✗ High viewability still doesn't mean human or attentive

Verdict: Demand OM SDK measurement for brand budgets; for performance, trust installs over viewability and skip the upcharge.
Best for: Media buyers paying CPM premiums for in-app viewable inventory.