Nokia Asha 200 is not supporting Whatsapp but other models in Nokia Smartphones. There are very few Asha series only supporting Whatsapp and at the same time some of the Nokia Asha 200 series is not supporting those apps.
Nokia Asha series basically has less features though you can find in it touch-integrated, few in-built apps and so on. You can't get everything and many features in each models of Nokia, some of the features lacks in one or another consecutive models series. You need to make sure what features you are looking for before buy any Smartphones to avoid disappointment later.