Multi Screen Basic Calculator app for iPhone and iPad

BASIC Calculator for iPad :

-Have all basic functions, similar to the built in calculator of iPhone.
-Scroll history sideways to look at current sessions performed calculations.
-Swipe right on the entered number text to delete last digit.
-Double tap the “+” , “-” , “x” , “÷” to calculate/operate the number by itself e.g.: if you enter 2 and tap “+” twice, result will be: 2 + 2 = 4
-Use it alongside another app in split-screen view either in Landscape or Portrait mode.
-Simple calculator with similar interface as of iPhone but with more features.