It can be downloaded from the Apple Store. The steps and methods are as follows:

1. First, open Apple's mobile phone and click the Apple Store app. As shown in the figure below:

2. Click Search after entering the interface. As shown in the figure below:

3. Search for Space Kill, and then click Download and Install. As shown in the figure below:

4. After downloading and installing, return to the mobile phone desktop and click Space to kill the APP. As shown in the figure below:

5. Finally, enter the space killing interface.