This is a tips demo application which is part of prework for codepath iOS for Designers course.
Time spent: 4-6 hours spent in total
Completed user stories:
Required: Calculator number pad loads by default and shows all options on the screen Required: Error handling prevents app from crashing when user deletes all input values Required: Tapping elsewhere hides the number pad
Walkthrough of all user stories: http://gph.is/1Zvh6Sc