Invision is an online prototyping tool for apps and websites. They extend a free membership to students. You need the info below to get it.
Go to this website: http://www.invisionapp.com/education-signup
Use this code: 56-73-13-19
Pre-recorded Video Demo available
You can view a pre-recorded version of our introductory demo. This will help you get up and running fast with InVision. If you are interested in this, just respond to this email, and let me know.
Studio is here!
Our powerful new design tool, InVision Studio, is available to you via our early access program. It is free for students and teachers. To get early access, please sign up here with the same email address as your InVision account: https://www.invisionapp.com/studio