Dynamic Rotation is a free Android app developed by THSoftware that provides a convenient way to manage screen rotation on your phone. When auto-rotate is turned off, the app displays a rotation suggestion button at the bottom-right corner of the screen. Tapping the button flips the orientation and locks it to that until you rotate back and tap the suggestion button again.

With Dynamic Rotation, you can easily switch between landscape and portrait mode without having to go through the hassle of turning auto-rotate on and off. The app is especially useful when you want to watch videos or view images in landscape mode while keeping other apps in portrait mode.

Overall, Dynamic Rotation is a simple and handy app that can make managing screen rotation a lot easier. It's perfect for those who frequently use their phone in both landscape and portrait mode and don't want to constantly toggle auto-rotate on and off.