You refer to the "Party Building 14+" mobile application developed by the Organization Department of Gansu Provincial Party Committee. You can try to download and install it on Apple's mobile phone through the following steps:

1. Open the AppStore.

2. Enter "Party Construction 14+" in the search bar and click Search.

3. Find the "Party Building 14+" application and click the "Get" button.

4. After the download is completed, you can find the icon of "Party Building 14+" application on the mobile phone screen.