

At my previous company we edited apks to add performance trackers. We modified the dex code directly. It was not easy, but it is possible. Some apps are obfuscated, which makes finding libraries hard. But a principal we used was to look for where the app called into the system code, especially around URL requests. So you could look for all calls to the system network libraries, and identify which ones were calls to tracker systems, and no-op those bytes.
But, it’s probably much easier to just use the adguard dns server.
This. I was surprised to learn how bad many people’s depth perception is. I used to work in VR and it seemed like a quarter to half of the people I showed it to could not see the depth.