Easy Pro Calculator from Andrei Kulik is a powerful and straightforward calculator app that is ideally suited for regular utility. The app provides you with basic calculator functionality if all you need is a quick pocket calculator for simple expressions, and it also easily transforms into a proper scientific tool. Since the expression view layout automatically updates your solution as you type, you'll always know where you are in the expression.

This calculator is exceptionally precise at up to 40 digits. Most standard calculators only offer calculations that work with 15 digits. It offers time and date functionality, and you can choose from various formats for the display. Calculations are saved in the history for easy reference, and you can add notes at your leisure.

It offers one of the most advanced tools for calculating percentages in the market. This is great for accurately determining tips, taxes, and discounts. Output formats include numbers, dates, binary, hexadecimal, percentages, and many more. Results can even be displayed as direct fractional expressions.

Syntax can be highlighted for the easiest reading, and errors can be highlighted as well so corrections are simple. The software includes functions that would be useful in scientific and engineering applications, and it saves its state while you are away.