fwiw, I work for one of these services. For a large consumer app (and actually, that's less and less reserved to the larger apps only), you can expect that eve

fwiw, I work for one of these services. For a large consumer app (and actually, that's less and less reserved to the larger apps only), you can expect that every time you see a widget, or tap anywhere in the app, it is going to trigger some kind of analytics log. The goal is not to determine your profile in order to sell you ads but to understand how people use our product (in aggregate). Let's say you have a checkout feature. you need to add an address, payment method and tap checkout. If a significant % of your users bail out of the checkout flow in the address step, there might be something you want to investigate. We also do user studies, they are super useful but are harder to generalize.