I’m an engineer and I teach math, science, technology to kids who need help. Including mine. In short: i love this app!
This app focuses on all the right notions and introduces a progressive and intelligent algebra notation that takes you effortlessly to the Real Thing.
Understanding the theory becomes easy after doing the exercices or vice versa... theory first, beautifully illustrated by exercises.
Everything starts simple and goes up from there. My daughter is 7 and juggles with fraction simplification, equation balancing and all the algebra fancy the game throws at her. She solves problems 15 years old struggle with. Granted she does not understand why she does it but she just does it.