There's no certainty that this HomeKit app will show up as promised, since there's always the chance that Apple will either delay it or scrap it entirely. There is evidence that this isn't just speculation, mind you. Apple used a shell company to file a trademark for a HomeKit icon late last year, so it's at least thinking about what a dedicated app would look like. As it is, Google isn't standing still between its OnHub networking and its internet of things platform, Brillo. A full-fledged HomeKit app might give Apple a competitive edge by taking some of the hassle out of automating your household.