Isabel Hughes and her father, Aidan, teamed up to develop calculator apps. Fraction Calculator Plus is Amazon’s App of the Day today. It started with some frustation over math homework at the dining ...

You can do fractions on your iPhone calculator using two different methods. When you turn your iPhone calculator sideways — switching it to a scientific-calculator layout — you'll be able to use more ...

Everybody needs a calculator. Because of this, there have been many calculators through the years, and they’re actually pretty easy to find. Most people use them to figure out stuff like how much to ...