The best feature is that it has all my patient information in one place, so I don't have to search through different charts or paperwork when looking up something about someone's medical history! It would be nice if they could add more features like allowing you access from anywhere (phone/tablet), adding notes into patients chart as well as being able to send them via email instead of having their address book saved inside your profile which can get confusing at times.
If this helps organize everything then its worth using; however there are other programs out there without needing an account set aside just purely by price range available online but also free trial versions too :).