Why are there so many calculator apps? They all do the same.. asside of the various bugs they have. I use realcalc all the time: https://play.google.com/store/

Why are there so many calculator apps? They all do the same.. asside of the various bugs they have. I use realcalc all the time: https://play.google.com/store/apps/details?id=uk.co.nickfines.RealCalcPlus https://play.google.com/store/apps/details?id=uk.co.nickfine...