GRE Calculator 2021 app for iPhone and iPad

IMPORTANT: This is not an ETS official app!

Why I need a GRE calculator?
> Using "(" and ")" can speed up your calculation and reduce mistakes, but this functionality is not commonly provided by built-in calculators.

Why this GRE calculator different from others?
> It followed the exact same behavior as the calculator in the ETS official PowerPrep math section.

Feature
* Limited precision
* Thousands separator
* "ERROR" sign
* Depth 1 "(" and ")"
* "M+", "MR", "MC" and Memory "M" sign
* "Transfer Display" button
* Realistic timer

Please feel free to contact us if you have any ideas to make this app better!