
The Android and iOS licenses for the pro version are $1,500 apiece and support features that the $400 versions do not. Unity Pro is a $1,500 license and extends Unity with many high-end capabilities like level of detail (LOD), automatic path finding, high end audio filters, video playback and streaming, IK animation, 3D textures, realtime shadows, and many other professional features. If you happen to be an XBox360, PS3, or Wii developer, you can deploy to those platforms as well, although I don’t know the licensing details. The free version supports multiplayer games, physics, 3D audio, animation, Direct3D 11, shaders, light mapping, and terrains among other useful features. If you are part of a team, a team license that adds collaboration capabilities to share assets is available for $500.

Additionally (as of this writing), for $400 each free (free price announced 5/21/13) deployment to Android and iOS (both iPhone and iPad) is available.

The free version (which is the one I use) supports out-of-the-box deployment to Mac, Windows, Linux, Web, and Google Native (a Chrome technology for deploying without plugins).
