Apple owns the iOS mobile operating system and sells the Mac computer line.
Apple develops both hardware and operating systems, allowing its devices to share a tightly integrated product ecosystem. iOS powers the iPhone, while macOS powers the Mac line of desktop and laptop computers.
The Mac traces its origins to Apple’s Macintosh, introduced in 1984. Apple later transitioned Macs from PowerPC processors to Intel processors and then to its own Apple silicon, beginning with the M1 chip in 2020.
A common confusion is calling iOS the operating system for every Apple device. iPadOS is used on iPads, watchOS on Apple Watches, and tvOS on Apple TV hardware. Apple’s market capitalization incorporates the company’s full product, services, and ecosystem businesses.