If you want to use our clips on an iPhone or iPad, it’s easiest to download them to a computer first, expand the Zip file, then use AirDrop (Mac) or iTunes (Mac/Windows) to transfer them to your device.
But you can also download them direct and open the Zip files using the Files app in iOS. This MacWorld article explains how.
You should only do this when connected to WiFi as the files are large. Make sure you have enough free space on your device.