If you're looking for a school calculator app, then you should definitely check out Dots School Calculator. This app is designed to help students with their math homework, and it's packed with features that make it easy to use and extremely helpful.
The interface is clean and simple, and the app walks you through each step of the calculation process so that you can be sure you're doing it correctly. You can also save your work so that you can come back to it later, or share it with a teacher or tutor.
There are a variety of different calculators included, so you can choose the one that's best suited for the task at hand. And if you need more help, the app also includes a built-in math dictionary and a set of tutorials.