According to the tracking scanner Exodus (can be found on F-Droid), which keeps an updated database on trackers and runs your installed app against its register, you can track what apps are tracking you and clues of how. Saw that Boost is tracking me and uninstalled it and went straight to Jerboa. Jerboa is pretty similar to good ole’ RedditIsFun-app and easy to use, so I am personally recommending it.
From F-Droid:
Exodus (Exodus show you trackers and permissions in apps installed on your device.) https://f-droid.org/packages/org.eu.exodus_privacy.exodusprivacy/
Yeah there is a dialogue on first launch telling you it’s ad supported software and that you can pay a small fee to remove all ads. Your post here is old news about an old strategy and throughout the comments here you claim it’s secretive which is false.
It’s a charitable reading to say you’re uninformed. I would lean more toward you wanting people to be misinformed about Boost, because as others point out, its ad support is called out in multiple ways before you use it, but you don’t care. Instead, you choose to call this completely common and standard way of supporting an app “predatory” and “secret”, neither of which near truth. Op, is your account the alt of the Sync dev or something?