As discussed above, modern smart mobile devices provide sufficient computing power and offer media-rich and context-aware features that are suitable for mobile electronic-health applications. These devices have gained acceptance as target devices for mhealth
applications. Many m-health application developers have chosen Apple’s iOS mobile devices as the target device to provide more convenient and richer user experience, as evidenced by the rapidly increasing number of m-health apps in Apple’s App Store. By examining the top two hundred of such apps from the App Store, several trends were identified.