WinRAR is primarily a Windows application. While an official app exists, RARLAB has not released a dedicated version for Apple's mobile operating system. Some apps in the App Store use "WinRAR" in their names or descriptions, but these are independent tools designed to handle the .rar format rather than official software from Eugene Roshal. Best Alternatives for Opening RAR Files on iOS
Since you cannot download the official WinRAR, these highly-rated apps from the Apple App Store provide similar functionality: How to Open RAR Files on Windows, Mac, and Mobile - Avast winrar ios download
While there is no developed by RARLAB specifically for iOS, you can still open, extract, and manage RAR files on your iPhone or iPad using high-quality third-party alternatives. The Reality of WinRAR on iOS WinRAR is primarily a Windows application