In Spreadsheet calculator app each row is a one formula with two operands and result. Each operand you can define or create link to result of previous formula (for example). And when result of previous formula changed - linked operand will be automatically changed. This is so simple! Try it!Spreadsheet calculator app has next advantages:- you can create difficult and complex formulas in simple way;- multiple functions are supported: plus, minus, multiply, divide, percentage, minimum, maximum, root and power- has workbooks (tabs) for different challenges;- insert/delete formulas;- all formulas saved automatically.Calculator has paid version without ads and without limitations.In application you can find good interactive help.