I would like to see other formats, like a straight 10 or 20 question quiz, covering everything, but this format does allow you to build a foundation one section at a time. Seeing that it's been years since the last update, this may very well be abandonware, but I am using this on an Android 11 tablet, so it does work. Considering the small size, the relatively low cost, and that there aren't that many quizzes like this on the Play store, this is as good as any quiz choice out there, so I'll give it a (reserved) four stars for now...
It's not a like a quiz grading your percentage in the end. You have to choose first whether you want to answer a prefix or suffix, then a question comes out, you will answer, it will say if you are right or wrong. Then resets again. You will always have to choose your question.
Min