If you try to download the resources, you have to accept a license agreement for the San Francisco font, which contains this line: IMPORTANT NOTE: THE APPLE SA

If you try to download the resources, you have to accept a license agreement for the San Francisco font, which contains this line: IMPORTANT NOTE: THE APPLE SAN FRANCISCO FONT IS TO BE USED SOLELY FOR PURPOSES OF DESIGN AND DEVELOPMENT OF APPLICATIONS FOR APPLE WATCH.