I like how it is easy enough so someone without medical knowledge can easily understand what they are saying, but also has an option of having more detailed information if needed as well! It's not too expensive or difficult to set up either (I believe).
The only thing i dislike about this app/site was when you first signup there isn't really anything else offered other than just getting your account started which could be helpful at times. If anyone wants something simple yet informative with options to explain things further then definitely give themself a try!! My doctor recommended using one because he said we were all overworked and didn't have time to take care of ourselves properly.