Ah, the stock-tracking site. When that must-have gadget is hard to get, they can help you find some limited retail or online restock before it disappears.

We see them all the time when there’s a new game console launch, or some hard-to-find sneakers, or during that brief Stanley Cup craze. But it has been a while since an iPhone launch has needed one. Sometimes a specific iPhone color is out of stock, but the situation is usually rectified quickly. Between Apple’s site offering a reasonable delivery estimate, carrier stores, and a fast retail refresh, the iPhone you want is usually not too hard to find.

Usually. But the iPhone Duo is different. Notoriously difficult to manufacture and thus in limited supply, preorders at launch are now stretching into late January of 2027. That’s a three-month wait if you order now. You might do better buying from your carrier. Or trying to grab one of the modest retail resupplies that will trickle out over the coming weeks. That’s where stock-checking sites come in.

iPhoneStockChecker shows you nearby stock in various colors and storage sizes. It includes the iPhone 18 Pro and Pro Max as well, which can still be a little hard to get in particular storage/color combinations.

OrionChime has two sub-sites. One checks restaurant availability in Japan (really), and the other checks on stock for Apple products like iPhones, Mac Studio, or Mac mini.

Apple Inventory Check also checks inventory for various Apple products, including Macs and Apple Watch, and of course iPhones (including Duo). It’s limited to Apple Stores, but it’s faster than using the interface on Apple’s site to check availability of various configurations.

TrackaLacker is a general stock-tracking site for online retailers. You can watch iPhone Duo there, but only for the online stores of places like Best Buy or Walmart, not the Apple Store online or in-store stock.

Most of these will also let you set a browser notification to alert you when a particular product or configuration is spotted, or even an email, but continually checking and notifying you is often a paid feature, or at least requires signing up for a free account with the site. (AI agents or tools like Apple’s new Notify Me feature in Safari might let you keep tabs on things, too.)