Whether you prefer  free or premium, It’s important that you register so you won’t lose your medications or history in your account — such as when you get a new device or if you were to lose your current device. As long as you registered, you can download any version of the app at any time — or even switch between the Android and iPhone versions — and all your meds and history are there for you. Otherwise, you’d have to enter all your meds over again because we have no way of matching you to your history.