Tickets for Overboard are $5 plus tax today only on the Atom app.
Looks like you don’t actually have to see the movie today and can get more than one ticket in a single transaction.
Link to atom website just for info, you should see a banner for the promo when looking at the movie in your app:
https://www.atomtickets
Movie info:
https://m.imdb.com/title/tt1563742/