The Smart Gimbal 2 app developed by app_developer888 allows you to control your Rollei Steady Butler Mobile 2 & 3 through your smartphone via Bluetooth. This app offers a range of intelligent features such as various photo modes including Selfie and Panorama, and video modes such as Slow Motion, Time Lapse, and Motion Time Lapse. With this app, you can easily adjust and control your gimbal's motor speed, switch between portrait and landscape modes automatically, and track your subject. You can also access all camera settings like video resolution, white balance, and flash directly from the app. The app also offers precise calibration, ensuring that you have the best possible shots. With this app, you can unleash your creativity and enjoy your gimbal to the fullest.