AlexCalc

AlexCalc is a scientific calculator for Android, published by Alex Barry under the AGPL-3.0-only licence. Its distinguishing trait is the display: expressions are shown as typeset mathematics in the style LaTeX produces, rather than as a single flat line of characters. For work with nested expressions, that layout makes the structure of what you typed easier to read back before you commit to a result.

Input arrives two ways. There is a button pad of the sort found on a scientific calculator, and there is plaintext entry, where you type the expression as text. The second route suits longer expressions and text that comes from somewhere else, while the buttons suit quick arithmetic without a keyboard in the way.

The listing names Android as the only platform, so there is no desktop or web version to fall back on. The exact function set, precision behaviour, and whether history or variables are kept are not covered by the facts given here.