CalculationBook Pro

CalculationBook Pro is an incredibly easy-to-use calculator that displays formulas as you type, helping prevent mistakes. It supports a history of calculations, a totalization bar, and sheet management for organized work, with the option to name formulas for quick reference.

It also offers referential calculations that auto-update when dependencies change, customizable function buttons, and a multi-sheet workflow. The free version is available with ads and lacks the sheet manager feature.