Apple uses SAP to build applications for its staff. For more details, check out this article by Bob Evans from Acceleration Economy and Cloud Wars: SAP helps Apple shorten innovation cycles by 40%
“Apple can launch new applications 40% faster thanks to its deep collaboration with SAP on its Business Technology Platform and co-creation initiatives established by the two long-time partners… Apple can now deliver new applications to his employees less than six weeks.’
Not just “internally focused apps for scheduling conference rooms or checking restaurant specials, these new rapid-release apps are designed to optimize key processes for Apple’s retail teams, such as inventory management and in-store picking and shipping.”
See this blog to see the resources available for developing with SAP Fiori and iOS devices: BTP and iOS Moving Forward.