iOS is described as 'Mobile operating system designed by Apple for its iPhone and iPad devices. It offers a user-friendly interface, intuitive features, and seamless integration with other Apple products. With iOS, you can access a wide range of apps, games, and multimedia content, as well' and is a very popular Mobile OS in the os & utilities category. There are more than 25 alternatives to iOS for a variety of platforms, including Android, Linux, Linux Mobile, Android Tablet and Self-Hosted apps. The best iOS alternative is Android, which is both free and Open Source. Other great apps like iOS are GrapheneOS, Ubuntu Touch, LineageOS and /e/.