A Sign up - Sign in page example project using Variables and States to validate the correct user input in both pages.

The list and chart include animations created using states. Design from: https://www.sketchappsources.com/free-source/4505-expenses-report-sketch-freebie-resource.html

Tinder UI cards

A calendar picker concept based on Ramotion's example on Dribbble, https://dribbble.com/shots/1782092-Survey-Platform-Design

An as close as possible copy of the IFTTT onboarding experience. This prototype is also made in 4 other tools (Pixate, Origami, Framer & Form) to compare the differences between them. More info: http://medium.com/sketch-app-sources/five-app-prototyping-tools-compared-form-framer-origami-pixate-proto-io-c2acc9062c61 Original app: http://appstore.com/IFbyIFTTT

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