Xprivacy basically did this. I supported the developer by buying the "pro" version and he promptly stopped maintaining it...and started a new project that was substantially more complicated/difficult to use, requiring writing blocking rules by hand...or paying him for the "pro" service that included 'recipes' for blocks.

Which users of the old app didn't get.

Fuck you, Marcel Bokhorst.

Thank you, Marcel Bokhorst

Your NetGuard (https://github.com/M66B/NetGuard) and FairEmail (https://github.com/M66B/FairEmail) apps are great. They are high quality, open source and contain none of the dark patterns that mobile is plagued with. They are available to download from Github, F-Droid and the Playstore. There are paid premium features to support you but if I wanted to I could still compile the app myself to unlock them.