It's so easy to build prototypes. I can see them in my web browser and edit them as many times as I want before printing them out. After printing I'm able to check if everything looks right. Sometimes I have to zoom in really far to be sure about what's going on on the screen. The program is very intuitive. There are tutorials for beginners that will help you understand how to get started. I don't like the fact that there isn't an option to change the background color when using the app. If you're looking for a solution for prototyping, then this is the one. In case you need to make changes, you can easily do it through the website version. I'm building a prototype for a poster that will be used at our school for students who are new to the area. This allows me to test the layout without.