A Picker selection navigates you to the screen selected. The project uses Variables and States and depending on the picker selection I change a button state to navigate you to the right screen.

A very basic Calendar example project using Containers a few states and 1 variable to track the year.

3 different counters using variables 1. A standard counter 2. A counter from the number of seconds the user sets 3. A countdown

A clean product card carousel as seen on: https://www.sketchappsources.com/free-source/3173-product-card-view-sketch-freebie-resource.html Infinite loop scrolling added