Harry Lewis (https://www.seas.harvard.edu/directory/lewis), who taught both Bill Gates and Mark Zuckerberg, is a member of the full Admissions committee. If you submit your apps via Slideroom or provide a link to them, your apps will probably be reviewed by the Professor Lewis – so make sure they are top notch. It also wouldn’t hurt to supply a link to the code to demonstrate how it all works as well as your knowledge of CS languages.