On iPhone X or later: Swipe up from the bottom of the screen and pause in the middle.

 On iPhone 8 or earlier: Double-click the Home button.3. Swipe up on the RoverCraft preview to close it.

Android:

1. Open your recent apps menu (usually the square button or a swipe up from the bottom).
2. Swipe the RoverCraft app window off the screen to close it.