1. iOS：
iOS是苹果公司提供的移动操作系统。它主要是为iPhone和iPod Touch等Apple移动设备设计的。它以前被称为iPhone OS。它是基于Darwin(BSD)操作系统的类Unix操作系统。它是仅次于Android的世界第二使用最多的移动操作系统。它主要用C，C++，Objective-C，汇编语言和Swift编写。 iOS的第一个版本于2007年发布。
2. Chrome操作系统：
Chrome操作系统是Google提供的基于Linux内核的操作系统。它使用Google Chrome浏览器作为主要用户界面。它是使用C，C++，Javascript，HTML5， Python和Rust开发的。它用于称为Chromebook的个人计算机中。谷歌于2009年发布了第一版Chrome OS。谷歌宣布将其作为一种操作系统，其中用户数据和应用程序都驻留在云中。
iOS和Chrome操作系统之间的区别：
| S.No. | IOS | CHROME OS |
|---|---|---|
| 1. | It was developed by Apple Incorporation. | It was developed by Google LLC. |
| 2. | It was launched in 2007. | It was launched in 2009. |
| 3. | Its target system types are smartphone, music player and tablet computer. | Its target system types are Chromebook, Chromebox, Chromebase and tablets. |
| 4. | Computer architectures supported by iOS are ARMv8-A (iOS 7-present), ARMv7-A (iPhone OS 3-iOS 10) and ARMv6 (iPhone OS 1-iOS 4.2.1). | Computer architectures supported by Chrome OS are ARM, IA-32 and x86-64. |
| 5. | Its kernel type is Hybrid. | Its kernel type is Monolithic with modules. |
| 6. | Its native APIs are Cocoa and BSD-POSIX. | Its native APIs are Linux/POSIX. |
| 7. | It has the preferred license is Proprietary, APSL and GNU GPL. | It has the preferred license of Proprietary. |
| 8. | Its does not have package management. | Its package management is Portage. |
| 9. | It is specifically designed for iphones and ipads. | It is specifically designed for Chromebook. |
| 10. | File systems supported by iOS are HFS+ and APFS. | File systems supported by Chrome OS are eCryptfs, NTFS, FAT, FAT16, FAT32, exFAT, ext2, ext3, ext4, HFS+, MTP, ISO 9660 and UDF. |