Is it possible to download browser in iphone simulator
You could download and build the Chromium iOS browser in Xcode and run it in the iOS Simulator. It should be close to / in parity with the Chrome iOS browser, at least from a page rendering perspective (difference include things like Chrome's auto update feature, built-in PDF view, Chrome's custom print preview, etc. Mostly ancillary features to the core browsing experience.
iOS build instructions: https://chromium.googlesource.com/chromium/src/+/master/docs/ios/build_instructions.md