The Rechner Calculator by Berger Föhr is the world’s first gesture based calculator application. At first glance the app appears to be a simple calculator with a minimal user interface that lacks the ability to add, subtract, divide, and multiply. However, the app executes various functions by recognizing finger gestures and in my opinion is a very powerful example of doing more with less.
“Math is beautiful. Arithmetic is simple. Rechner is both. Experience the world’s first minimalist gesture based calculator.”
“We sought to create a calculator that is as beautiful as it is simple. Rechner is that calculator.”