Apple added a neural networking API that can leverage the GPU or CPU of a given device in the last version of iOS. https://www.wired.com/2016/06/apple-bringing

Apple added a neural networking API that can leverage the GPU or CPU of a given device in the last version of iOS. https://www.wired.com/2016/06/apple-bringing-ai-revolution-iphone/ https://www.wired.com/2016/06/apple-bringing-ai-revolution-i... There was an article last year discussing customizations Apple had made to Imagination's GPU that made it more suitable for this purpose. http://www.realworldtech.com/apple-custom-gpu/ http://www.realworldtech.com/apple-custom-gpu/