AffinityBlue has NodeBeat (iTunes Link) for the iPhone and iPod Touch and NodeBeat HD for the iPad in the iTunes App Store for FREE (regularly $1.99/$2.99)for a limited time.

Make music with NodeBeat, the intuitive and fun visual music app for all ages. Whether you’re 2 or 92, NodeBeat will make you sound like a pro. Create your own music in a matter of minutes or listen to NodeBeat generate its own. Easily share your creations with others or save them for later to show your friends. Discover your musical genius with NodeBeat!