Unfortunately, based on the text provided, there is no information available on what Luma AI on the App Store actually does. The provided text only includes links and information about purchasing Apple products and accessories, as well as links to support and education resources.
As a result, there is no objective, insightful, or precise description that can be provided for Luma AI without additional information. It is possible that an accurate description for Luma AI may be found elsewhere, but the provided text is not enough to determine its function.