I'll be traveling to South Africa and will need to charge my Apple devices while there. It seems Apple does not have one in their box of power converters/ adapters.
If you Google search "travel to south africa power adapters", you will find a number of links to products for sale on various websites that should serve your needs.
In addition, walk into any local electronics store and check their adapters. There is no need to buy one from Apple necessarily.
Your second option is to buy an Apple iDevice charger from the airport upon landing in South Africa.