Imo, as long as you clearly say "here's the choice: opt in or opt out, we are doing XYZ" in clear words, it's fair. It doesn't really matter whether on each ta

Imo, as long as you clearly say "here's the choice: opt in or opt out, we are doing XYZ" in clear words, it's fair. It doesn't really matter whether on each tap you fire a specific event ("TapOnList", "TapOnPurchase") or whether you log all app interactions (where the user taps, are they going around the app not finding something?). Or does it? Where do you cross the line? If this app would be Facebook I would see your grievances - devs could see personal data. But let's assume it's an app where there's barely any personal data, or specific views do not have this logging enabled.