How many times in a day do you open a calculator for a simple percentage calculation? How many times do you need to re-do the same calculation, changing one figure only? Too much for an ordinary calculator, and too little for a fully fledged spreadsheet... Now you can do it the clever way on your Smartphone: open one of the 16 screens of Finanz, enter 2, 3 or 4 data, and let Finanz calculate the missing number, with the minimal number of pointer strokes. The good news is that if you want to change one data and re-do the calculation, you will also do it with a minimal number of strokes. And you can "reverse" any calculation, like with the "solver" of a spreadsheet: "what should this parameter be, if I want the result to be this instead of that, all other things being equal...?" Each screen of Finanz operates like a little spreadsheet, where each cell can be alternatively a data entry cell and a calculated cell. With 16 customized screens, or "models", Finanz covers most business or finance situations: sales tax, mortgage, leasing, margin, discount, cumulated interests or growth.