DuoKits

DuoKits is a free directory of apps for iPhone Duo, Apple's foldable iPhone. Every App Store app runs on the device, but the App Store doesn't say which ones use the 7.6-inch inner display or the fold. DuoKits sorts listings into Built for Duo for apps that change when folded, unfolded or propped half-open, Adapted for apps rebuilt to fill the larger screen, and Compatible for apps that run unchanged with black borders. Listings without enough evidence are marked Claimed support or Pending verification. Each app page shows the evidence method, from a developer statement or an Apple announcement to simulator or on-device testing, plus the date it was checked. It also runs a launch tracker for confirmed apps, an ideas section and wallpapers, and publishes the whole directory as open JSON. Listings can't be bought, developer submissions are free, and the site isn't affiliated with Apple.