This is Rechner, a new app for iOS. It’s a calculator, but not an ordinary one. For one, it’s prettier and much simpler. But, most importantly, it’s fully gestural, designed for a touchscreen.

The Rechner Calculator is a $0.99 iOS app that replaces several of the normal calculator buttons with simple swipe gestures. The Rechner Calculator is a $0.99 iOS app that replaces several of the ...

Normal calculator apps are so last century. Photo: Charlie Sorrel/Cult of Mac Soulver is my favorite Mac calculator app, because it doesn’t act like a normal calculator. Imagine that you have a piece ...