How to turn your iPhone into a Bluetooth controller

Remote Gamepad turns an iPhone into a Wi-Fi game controller for PC, Mac, or Linux after installing companion software and joining the same network, using a QR code to pair. It offers three default layouts, customizable layouts, haptic feedback, and steering settings. The free version caps sessions at 20 minutes unless ads are viewed; a $3 upgrade removes the cap, though the iPhone cannot match the tactile feel and performance of a dedicated Bluetooth controller.