A Safari extension to modify the user agent per website.
Download: App Store
There wasn't any user agent changer per website on the App Store at the time I started developing this extension, and using a separate browser/app on iOS to do web searches was troublesome.
Since Safari supports the web extensions manifest, I decided to port bing-chat-unblocker-chrome and build it for iOS and macOS.
To build Unagent, open the project in Xcode and build it.
Follow the instructions to change the signing identity when necessary.