PLEASE MAKE SURE your phone is compatible before purchasing: Supported iOS phones: 5s, SE, 6, 6 Plus, 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, X, Xs, Xs Max, XR, 11, 11 Pro, 11 Pro Max, iPhone SE 2020, 12, 12 Mini, 12 Pro Max. iOS Operating System: 12, 13, 14 Application version – 4.8.2. NO BATTERIES NEEDED - Diabetes Blood Sugar Test Kit. The App (Available USA only) - Blood Sugar Testing - With a tiny drop of blood and a thin 30 ga lancet is all it takes to measure on your phone within 6 seconds.