The app teaches and challenges you at your own pace. And like a good teacher, it leads but not dictate you to the right direction.
Playing shouldn't be difficult. You won't be asked to solve and do things without making sure first that you are
ready for it.
The lessons are meticulously designed, arranged and tested by world-class circuits teachers and engineers. You go from zero to parallel capacitors in no time.
You and your kids won't be able to get your hands off it; a heck of a deal compared to pushing your kids to attends a boring summer class.