The first batch of iPhone Duos are out in the wild, and a bunch of app developers are finding ways to make the most of its foldable design. Perhaps the weirdest so far is Toastie , a game that essentially turns your $2000 device into a grilled cheese maker. Add some ingredients, close the iPhone Duo, and toast your creation to perfection. We turned the iPhone Duo into the world’s most expensive toaster 🥪 Build the sandwich quickly, then close your Duo to toast it. Don’t burn it though! Check it out: https://t.co/riRVUFLlm1 https://t.co/0llh2lv9R1 Tom Szykulski (@t_szykulski) October 7, 2026 It costs $3, less than an actual grilled cheese, and for that you get "10 orders, 3 loaves, and 14 things to put between them." Your crispy masterpiece then gets a star rating for the recipe, plating, toasting, and preparation time. You can also play on iPhone and iPad without the cute close mechanic