Animated menu on iPad

We are a medium consultancy/development company looking for someone to develop an initial version of an animated side menu for an IPad application. The dinamics of its usage can be inspired by this video ([login to view URL]), but we accept new ideas. We intend to involve the freelance of this work in the later project, so please consider this an investment for a larger job. The deliverable should be a working XCode project prototype. There is no need to have anything but the left menu on the app. We have urgency on this project.