Today’s featured promo on MacUpdate offers HealthEngage Asthma 2.2 for US$19.95 (50% off, retail $39.99). “HealthEngage Asthma allows asthma sufferers or investigators to collect, store, and chart peak flow, medications, personal diary, and other health information. It can be used in disease management or clinical trial settings on desktop computers, Palm, PocketPC, mobile phones, and on the Web.” HealthEngage Asthma 2.2 requires Mac OS X 10.1 or later.