That said, for opening links, Google's devised [1] for Chrome-ish on iOS to abstract everything, but I believe (as an Android user and developer myself) that all it takes is a

[[UIApplication sharedApplication] openURL:targetURL];

where targetURL is an NSUrl.

Chrome on iOS even allows you to specify a callback URL to return to.

[1] https://developers.google.com/chrome/mobile/docs/ios-links