高校数学 I：方程式と不等式 app for iPhone and iPad

This app contains part of problems taught in the Japanese high school math course Sugaku-I.

=== Contents ===
* calculations of expressions
* factorization of polynomials
* calculations of expressions involving square roots
* quadratic equations
* inequalities of first degree

=== Expected users ===
* High school students who want to learn basics before advanced materials.
* University students who need to brush up math skills.
* Anyone who was bad at math as a student and tries to learn it.

=== Features ===
* This is a universal app and you can use it both on the iPhone and iPad comfortably.
* This app presents different views when you change the orientation of a device and you can choose your favorite one.