For people with no medical knowledge, of which we are probably the majority, Ive found this to be a great, handy little app. In fact, its probably meant more for people like me than, say, a doctor or other medical professional. I dont know why A) people expect every app in the store to be a complete, professional guide for experts when they dont describe the app as that and B) why professionals or "Experts" have to knock an app for not being what it never claims to be? I have a couple of Chillingos other apps (Lexisgoo Dictionary and iChillout) and they are great, unique apps...and no, I dont work for them or have any affiliation. I just like their stuff.