The project contains numerous examples completed using variables and conditional logic.

Music App project Design Credits: https://www.sketchappsources.com/free-source/2847-apple-music-app-sketch-freebie-resource.html

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

Design Credits: https://www.sketchappsources.com/free-source/4675-marier-shopping-ui-kit-ebizmirli-sketch-freebie-resource.html

Interactive TV app prototype of Hulu's home page. Use the arrow keys on your keyboard (note: mouse click to enable keys) or map to a remote control on a television screen to explore a Hulu like home screen with proto io. Note: Must click the canvas to enable key presses, this seems to be a common restriction with most prototyping tools when building key press focus interaction models.

I created this prototype of a wildlife photography app to experiment with horizontal and vertical scrolling interactions. What do you think?

Fashion Shop App UI This UI set includes 5 screens: Splash, Sign up, Login, Home and Product Details Design Credits: https://www.sketchappsources.com/free-source/3663-hi-fashion-shop-ui-sketch-freebie-resource.html

This is an example of a sign in screen that validates a username and a password. Feel free to import this fully editable project into your own account for use in your prototypes. Use the following to successfully sign in and proceed to the next screen User Name: john Password: proto.io

Movies & Series App project Design Credits: https://www.sketchappsources.com/free-source/2896-sample-iphone-x-movies-app-sketch-freebie-resource.html