Prototype In Xcode Using Storyboard

Meng To, a self-taught UI/UX designer:

In this tutorial, I will focus on the Storyboard feature, a powerful tool in Xcode that allows you to build an App without a single line of code. You will be able to create a functional prototype in a matter of hours.

If you need a running start with Storyboard, I recommend you take a look.