Marvel is a free tool that turns sketches, wireframes, PSDs and designs stored in Dropbox into interactive mobile and web prototypes. By connecting their Marvel accounts to Dropbox, users can keep their prototypes updated and in-sync regardless of whether they make any changes in the future.
To create your first prototype, login with Dropbox over SSL and extract the images you’d like to use. Link each of your static screens together using hotspots. You can also add animations, and toggle through screens. Assuming you’re designing a prototype for the iPhone, Marvel will bring up a preview frame that show exactly what your design will look like once it’s fully implemented. You can even create app icons to install on the home screen of your device. Marvel provides you with a unique URL for each prototype you create, which you can then share with clients or colleagues. This URL stays the same regardless of how many changes you make to your prototype.
The real innovation behind Marvel has to do with its connection to Dropbox. Marvel never edits or modifies any files in Dropbox. Instead, the web-based application simply extracts images. Files are then kept up-to-date automatically, which means users never have to re-upload their prototypes once they’ve started a new project.
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