Sorry, no point before line calculation - otherwise quite successful app

The calculator provides the same 3 keypads are available: one for integers, the other two each for the numerator and denominator. Fractions are represented equally reduced in the display.
Good use for invoices without mixture of dot / dash functions. However, the hosts dominated no point before line calculation and has no bracket function and thus has significant risk of error, therefore only 3 stars.
Conclusion:
Visually appealing app to time to add fractions fast / subtract, or multiply to / divide. Full marks could gain the app at solving the problem point before line as well as the introduction of a staple function.
Beautiful are the visual representation and the lack of advertising.