Yay, finally!
This app has practice problems with solutions, which is exactly what I needed!
Thorough
This app covers a wide range of topics, in depth. Solutions to EVERY problem (over a 1000). Not to mention it includes 6 practice tests, ranging from "easy" to "brain buster"—my terminology (I can be a bit dramatic). Excellent app, a $10 app that's well worth the money, if you take your education seriously. I wish you and the creators of this app the best. Beautiful people of the earth, you have all my well wishes. Love.
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Mathematics
Quite useful. Needs lengthier explanations
