this is a link to short youtube type video on the asthmasense app.
https://play.google.com/store/apps/details?id=com.ezasia.isonea
my wife got the app yesterday for her iPod. My 12 year old has asthma.
IMO watching this video is a good way to obtain a 2 minutes overview or orientation on the asthmasense app.
The video communicates visually user friendliness and value.