Shopping cart using variables to calculate selected item amount, and total costs using variables. Project also includes a thumbnail gallery

Drag and drop the blue "app icon" to rearrange the order of the apps on the Home Screen

Swipe to see some Porsche models. Tap on a car to get more information on that car. The project is using States and State animations

Random Password Generator created using variables.

Using variables to Start/Stop/Pause/Resume a timer

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)

Custom Android KitKat Scrollable Tabbar

Tap/Hold the black circle to see the 2 state animation of the Keezy sound looping app. A circle of circular buttons spins out onto the expanded black circle that becomes the screen background. Once you're on this 2nd state, tap anywhere to return to the initial state. I recorded a webinar showing how to create this interactive animation: http://docs.proto.io/videos/re-creating-bespoke-interactive-animations-with-proto-io-2/ You can also find the assets here used for the prototype. Enjoy!