Manufactured? Yes. Designed? No. Of course, their processors are ARM based, but that doesn't mean that they just stick a reference design in there and hope for the best. A lot of work goes into the design and Apple bought P.A. Semi and Intrinsity and acquired a 9.5% stake in Imagination Technologies, the folks behind PowerVR for that very purpose. Blithely declaring that Apple don't design their chips is somewhat wide of the mark.