I simulated a 10 second timer that counts down from 10 to 0. This is very simple to do. All you need to do is change the text property of the text value with a custom value and include a delay of 1 second. Then add a callback for the next number with a delay of 1 second. Repeat this until you get to the number 0. There is no need to use variables to simulate a timer. If you are looking for someone to help you with your prototype, we are available for hire at: http://protonerds.com/

This one-screen prototype demonstrates some of Proto.io animation functionality.

This is a prototype of an app that pairs with a fitness track called Pulse Band. Pulse Band can count steps, measure heart rate, count stairs climbed, and also measure blood pressure.

This is very early stage prototype of a team management tool. The purpose of this prototype is to purely show the high level process of asking team members for feedback and then the concept of seeing the results.