This app is my interpretation of the calculator app described in the "Developing IOS8 Apps with Swift" Stanford tutorial.
Its a litte bit different but features are the same.
You can use the standard operations: addition, subtraction, multiplication and division.
But I made some more Buttons to calculate the x², x³ and the % value of a number.
I hope you will like this small calculator app.
Feel free to send me some feedback. So i will be able to update the app and implement some new features in Future. ;)