D'oh, accidentally put up an unhelpful review (The Mobile Add-ons site is still terrible). And I hadn't even noticed until I got the "Dev replied to the review" email.
Now, with 100% more words.

Pretty cool, does what it says it does. My suggestions would be being able to export/import rules and settings (maybe even sync across devices, a la uBlock Origin; but regular export/import to a file works just dandy).

The missing star is because of missing functionality in Fennec;you can't access the rules ad such (but they do work, along with the cleaning option). Perhaps adding a button that lets us open up the extension's settings (again, like uBlock Origin) is in order?

....Unless it was never meant to pop up in the Android Addons page in the first place...