Visual Calculator is a free Android application developed by Windingo, designed to help users perform complex mathematical calculations in an easy-to-use interface. The program offers traditional mathematical notation, as well as variables for intermediate values. The layout of the application is polished, and the formula proportions are carefully chosen, resulting in an amazing experience with a combination of handwritten and computer calculations.

The program has several features such as multiline calculations on one sheet, user-defined variables, and functions, tables with autosum, customized keyboard layout for maths expressions input, scrollable, and zoomable input area, syntax highlighting, and in-place error notification. Additionally, there are several fonts and color themes to suit different tastes, portrait and landscape interface, select/copy/cut/paste functions, save/open functions, undo/redo history, and calculations sharing.

Visual Calculator supports basic operations such as addition, subtraction, multiplication, and division. Furthermore, it supports advanced mathematical operations like exponents, roots, exponential functions, brackets, rounding, absolute value, fractional part, trigonometry, logarithms, and constants such as π, e, φ, and δ.

Overall, Visual Calculator offers a great experience for users who need to perform mathematical calculations quickly and efficiently.