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 ...

A calculator app called Calculator Plus designed by a Dublin father and his 13-year-old daughter based in the US is currently at the top of the Amazon App charts and is the No 1 calculator app for the ...

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 ...

A calculator developed by a 12-year-old girl and her Irish father has become the number one-rated app worldwide on Amazon’s Android App Store. Sun, 19 May, 2013 - 14:03 A calculator developed by a ...