A reverse timer using the handle to designate where the timer begins its countdown.

Using variables to change the opacity of items Design Downloaded from: https://www.sketchappsources.com/free-source/2567-chandelier-lighting-illustration-sketch-freebie-resource.html

Coronavirus COVID-19 Global Cases by Johns Hopkins CSSE - Mobile Version Using an embed map from https://www.arcgis.com/

A Sample project used in various official Proto.io tutorial videos. It contains various design patterns commonly found in popular mobile apps.

Used variables to change filters on an image

Hit Refresh icon to see a loading animation for bringing new email. Swipe left on the top latest email to delete. (Inspired from http://www.beautifulinterfaces.com/item/114-covert-inbox)