The most current Apple operating system is iOS 17, released on September 18, 2023. It powers iPhones and introduces features like StandBy mode, improved Contact Posters, and enhancements to Autocorrect and predictive text.
Apple's operating systems are closed-source, Unix-based systems designed to run exclusively on Apple hardware. They share a common foundation but are optimized for different devices:
Each version receives updates annually, with iOS typically leading the release cycle. Updates are delivered wirelessly through the Settings app on devices.
| Operating System | Devices | Current Version | Release Date |
|---|---|---|---|
| iOS | iPhone | 17 | September 18, 2023 |
| iPadOS | iPad | 17 | September 18, 2023 |
| macOS | Mac | Sonoma | September 26, 2023 |
| watchOS | Apple Watch | 10 | September 18, 2023 |
| tvOS | Apple TV | 17 | September 26, 2023 |
Apple maintains separate operating systems for different devices because each platform has unique hardware capabilities and user needs. For example, iPadOS includes features like Slide Over and Split View for multitasking, which aren't available on iOS. Similarly, watchOS is optimized for the smaller screen and touch interface of the Apple Watch.
This approach allows Apple to provide a tailored experience for each device while maintaining a consistent design language and system integration across all platforms.
Many people assume that all Apple devices run the same operating system. However, this is not the case. While iOS and iPadOS share a common core, they have significant differences in functionality and features. Similarly, macOS is a completely separate operating system designed for the more useful hardware and larger screens of Mac computers.
Another misconception is that Apple operating systems are not customizable. While they do not offer the same level of customization as some other operating systems, they do provide a range of options for personalizing the user experience, such as changing wallpapers, rearranging app icons, and adjusting system preferences.
When I updated my iPhone to iOS 17, I noticed several improvements. The StandBy mode is particularly useful, displaying relevant information when my phone is charging and upright. The enhanced Contact Posters make it easier to identify contacts, and the improvements to Autocorrect and predictive text have made typing faster and more accurate.
I also appreciate the new features in the Notes app, such as the ability to create interactive checklists and add collapsible sections. These small improvements make a big difference in daily use.
Unlike Android, which is open-source and can be installed on many devices, Apple's operating systems are proprietary and designed to work exclusively with Apple hardware. This closed system allows Apple to improve performance and security, but it also limits compatibility with non-Apple devices.
For example, while Android users can sideload apps from outside the Google Play Store, iOS users are restricted to the App Store unless they jailbreak their devices. This difference in approach affects the range of available apps and the level of customization possible on each platform.
To learn more about how operating systems boot up, see how operating systems start.