The SwingLoft Lite Version is a FREE working copy of the SwingLoft Video Analysis Software. The Lite version has about half of the features that the Professional version includes. The main feature that the Lite version does NOT have is the import and export feature. The export feature allows the user to convert a movie file to a file that is compatible with the iPod or other MP3 or MP4 players. The Lite version is available for Mac OS only.