Can you guess what the number one cause of headache for iOS advertisers is today?

Well, there are quite a few candidates, unfortunately, but Apple's privacy threshold is a strong contender.

A quick recap of what the fuss is all about: The Apple privacy threshold is designed to prevent marketers from identifying or even coming close to identifying a unique user.

How is this done? By determining if and when a conversion value will be sent with an SKAdNetwork postback. A minimum number of installs needs to be associated with a certain marketing campaign in order for the threshold to be met. If the threshold is not met, the conversion value is sent as "null" in the SKAN postback. If it is met, then a numeric conversion value is sent.