Simply drag and drop your .app file into App Scanner and it will analyze your code and flag any methods that may be grounds for rejection from the App Store.
Stop leaving your submission process up to luck and take charge of the situation today!
Note: App Scanner is no longer being supported by the developer, however it has been open sourced. Version 1.4.1, linked to above, is the last compiled version available for download. Version 1.4.2 can be compiled from the source code which is