Main features
Arithmetic, done properly.
Scientific calculation
The four operations with brackets, powers, trig and inverse trig, logarithms, roots, exponents, absolute value and factorials, with degrees and radians one tap apart.
Simple calculator
The basic operations with a percent key and a sign key, a live preview as you type, and trailing zeros trimmed away automatically.
Keyboard control
Number keys, the numeric keypad, Enter to calculate, Backspace to delete and Esc to clear, so you can chain calculations without retyping the expression.
Purely local
Everything runs inside a local window with no connection and nothing uploaded, and there is no sign-up or login either.