CompSquare(Math Drills) app for iPhone and iPad
Just right for brain teasers.
You will be able to do mental math to complete the square.
You can enjoy it like a puzzle with simple operations.
There are two types of completing the square, each with two modes.
In practice mode, tips are displayed.
In challenge mode, score a lot within the time limit.
If you can exceed a thousand points, you are a genius!!