Besides using the Google Home app and Chrome Browser, you can also use third-party apps to cast Chrome browser to Chromecast. One of the popular apps is "All Cast." Here's how:
1. Install the "All Cast" app on your iPhone from the App Store.
2. Connect both the Chromecast device and iPhone to the same Wifi network.
3. Open the All Cast app on your iPhone.
4. Select your Chromecast device from the list of available devices.
5. Now, open the Chrome browser, and browse any website or media files.
6. Tap on the 'Share' icon in Chrome's top menu bar and select All Cast.
7. Select your Chromecast device from the All Cast list.
8. The browser content will now start casting on your TV screen.