Insofar as they're tied into the online advertising markets, yes. You need to collect the data for good ad revenue, and in-app purchases don't typically pay the

Insofar as they're tied into the online advertising markets, yes. You need to collect the data for good ad revenue, and in-app purchases don't typically pay the bills on their own, so there's an incentive to collect data. Since the actual collection tends to be via libraries, it's relatively easy to ignore what your app is actually doing.