follow_along_with_video_below_to_see_how_to_install_our_site_as_web_app
Note: this_feature_currently_requires_accessing_site_using_safari
And?
Oh in addition to what you posted I've got
weather icon - adds the temp in the status bar if you want and it makes the weather icon real time instead of a generic sunny day.
Installous - download paid apps for free.