Cascading Calculator You can use calculators by your way ! *Not Only One Calculator ! You can put a dozen calculators on your screen ! *You can drag & drop your calculators around the screen. *Too many calculators ? Auto Arrange let your calculators neatly. *You can delete particular calculator from the screen,or you can delete all calculators with one touch! *You can rotate your ipad,all calculators will auto-rotate and find their proper positions. *Copy and Paste. You can copy the numbers from one calculator, and paste them to other calculators.