How accurate is the App/SDK data?

Two factors determine whether the data is the truth — accuracy, and recency. 

Accuracy — MixRank observes the apps directly, and makes a deterministic observation on whether an SDK is present or not. If the classes/namespaces that are associated with an SDK are present inside an app, it is 100% valid for that version of the app.
Recency — This relies on whether the most recent and updated version of an app is correctly present inside MixRank. MixRank does it faster and better than anyone else in the market. We scan 3x more apps than our nearest competitor meaning MixRank will have the latest version (and thereby the correct version) of an app much before any other vendor.