No app required. The full casino works in your phone’s browser. Simply visit the Iris Casino website, log in, and you’ll find the games, cashier, and support right there. The site adapts to fit your screen, whether you’re on an iPhone or Android. I’ve checked it on both, and it automatically scales the buttons so they’re simple to tap. If you prefer apps, there’s an optional one you can download—it adds push notifications and fingerprint login—but you won’t lose anything by using the browser. Both ways give you the same casino, with all the same options.