iOS makes this very easy where every app launching another provides a link in the top left. I find it hard to believe users of tiktok and snapchat with their weird hidden/discoverable functionality of swiping from different places would have issue with the button that says "< snapchat" at the top.

But ok, let's say I am giving too much credit to people. Just put a setting in to use the default browser for those of us that want it?