This is the lite lite version of the Formules apps. It has limited editing functionalities but allows to fully use Formules documents created with the iOS or macOS versions.
Engineers, scientists and students often have a need to do calculations that are impractical to enter on a calculator. If the calculations involve various formulas, with a need to test for various input values, a programming language is appropriate but source code will never be as intuitive as nicely rendered maths to design a formula.
With Formules, create nicely rendered formulas and evaluate them !