Use a variable to add the costs of premium features that are selected or deselected using an iOS switch component. See a video of how to do this step-by-step in this webinar: https://support.proto.io/hc/en-us/articles/115001585411-Model-advanced-prototypes-that-use-variables-part-II TAGS: variables variable math addition switch switches fire an items event

Using variables on a slider to control the Brightness and Hue of a light bulb

A halloween project i have put together using the Proto.io Halloween icon set: https://proto.io/freebies/free-halloween-icons/

Since Halloween is coming up I created this project using Proto.io's free Halloween icon pack. I simple onboarding process using scrollable containers with on swipe interactions.

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

Group project for human-computer interaction

Design Credits: https://www.sketchappsources.com/free-source/2513-simple-book-app-design-sketch-freebie-resource.html