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 ...

Most of us press calculator buttons without thinking much about them. The screen lights up, numbers appear, and mistakes disappear. It all feels obvious enough. Still, every so often, a small detail ...

While calculators were invented to make it easier to solve math problems, no matter how easy or complicated they might be, some people are finding out that even the most common buttons on the popular ...

The iPhone's calculator app might seem quite basic, but there's a lot more to it than meets the eye. For example, it has a built-in scientific calculator. All you need to do is rotate your iPhone ...