All lovers of OS can be more than happy – hurray a completely new OS Calculator Concepts have just appeared. They look damn realistic. These masterpieces were created by a designer at Mintpass.These cute calculators look like calculators from either Mac or Windows.

I can’t believe it. It turns to be that easy to create an awesome thin and only designers at Mintpass managed to succeed. Well-done! I mean it!

Have a look at these cuties, they look exactly like the calculator apps in Windows and in OS X. I must admit – cool!