You should download them from Samsung Apps separetly.
It provides authorization, internet and other data depending on application and wearable device model.
If you don't use one of supported apps you don't need it.
Supported watch apps:
ENoteGear. Evernote client
SocialGear. VKontakte client
SquareGear. FourSquare client
TaskGear. Todoist client
TodoGear. Toodledo client