Calculatium - perfect instrument for daily and difficult calculations. It has very beautiful minimalistic design and also include three color themes for different devices. You can use simple and difficult operations both in portrait and in landscape orientations (only iPad).
This calculator was designed to be the most simple, performance and elegant.
It includes a "C" button, which performs a backspace function.
Support iOS 9
Optimized for iPhone 6S and 6S Plus