In a nutshell, just about any Samsung device that is powered by the Android 4.4.2 KitKat operating system. Some of these apps which are available for download will take over the current version of the apps on your Samsung device, so it makes perfect sense for users to perform an uninstallation operation on the older version prior to sideloading the new installation files, also known as APKs. Do bear in mind that if one were to uninstall core Samsung apps, one would need to have some rooting knowledge.
The S Health app does not work at this point in time, and also the Gear Fit Manager app remains unusable at this point in time since there is no relevant hardware in place to help it function. As for the remainder of the apps such as S Note, Calculator, WatchON, S Translator, Galaxy Gear Manager, and Gear Fit Manager, they seem to be working just fine. Do proceed with caution if you think that you know what you’re doing.