OM SDK: how viewability gets measured in apps1:07
Ad tech explainers

OM SDK: how viewability gets measured in apps

1:07 · November 11, 2026

One game app. Four verification vendors. Four separate SDKs.

Lesson notes

One game app. Four verification vendors. Four separate SDKs.

The fix is OM SDK, the Open Measurement kit, one shared measurement layer for every vendor.

Before twenty eighteen, each verification firm, the companies brands hire to check ads were seen, wanted its own code in your app. More weight, more crashes, numbers that didn’t match. In April twenty eighteen, IAB Tech Lab released OM instead. Here’s game.example. Its ad SDK includes OM once. Each ad brings a small script from the brand’s vendor. OM reports how much of the ad is on screen, and for how long. The vendor applies the rule. Display, half the pixels for one second. Video, two seconds.

Your check. Confirm your ad SDK supports Open Measurement. Without it, vendors can’t verify your in-app impressions.

Next: SHARC, the standard meant to replace SafeFrame and M-RAID.

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