The first version of Boost for Lemmy is almost ready. If you want to test the app for bugs and give feedback before the app is published, follow this link https://play.google.com/apps/testing/com.rubenmayayo.lemmy to enable an early access option on the Boost for Lemmy Play Store listing.
Does buying ad free disable usage data sharing with the ad networks?
I don't know but am curious--honestly I bought the app just to support the developer.