Ulertu: Spreadsheet Formulas

Ulertu helps you understand how spreadsheet formulas respond when input values change.

Open an .xlsx workbook or try a sample. Ulertu examines the relationships between its cells and asks you to predict what a formula will return if an input changes.

Choose an answer, compare the before and after values, and follow the calculation trace. Try another question to check your reasoning, then revisit your recorded answers in the workbook's evidence history.

The built-in Monthly Rainfall, Plant Growth, and Class Survey workbooks give you examples to explore. You can also open supported .xlsm files; macros are not executed.

The calculation engine supports a defined set of arithmetic, logical, lookup, and text functions. Unsupported formulas are identified with a reason. Ulertu does not edit your original workbook.

Delete a workbook and its answer history from the home screen when you finish.