Judge a book by its cover

Ihave an idea for a book app.  Authorsupload an image of their book’s cover, and readers get to go through them.  If the reader doesn’t like the cover, theyswipe left.  But if they find the coverinteresting, they swipe right, which opens up a page with the blurb as well aslinks to buy it. Soif you know how to make an app, there you go. Or if this already exists, let me know.