Downloading this software depends on where you want to download it. Teacher, I'd like to introduce three ways to download a shadow and a cloud.

Apple's mobile phone directly searches for the movie cloud in the Apple appstore and then installs it like other apps.

Android, no matter what mobile phone, can be downloaded from the Android App Store.

Android can also be searched and downloaded in the computer, but this is relatively troublesome with the help of mobile assistants.