Calculator Plus, developed by 12-year-old Isabel Hughes and her Irish father, Aidan, has become the number one-rated app worldwide on Amazon’s Android App Store. It has just become the highest-rated ...

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 ...

One day after school, Isabel Hughes was looking over math homework with her dad. The 12-year-old wanted to use a calculator that made fractions easier, but there were no traditional calculators to do ...

An Irish father and daughter duo had a special reason to celebrate the New Year, when their calculator app they invented hit the top of the Amazon Kindle Fire charts. Adrian and Isabel Hughes worked ...