- Twitter: uses SFSafariViewController
- Reddit: uses custom in-app web view, shows page title and url on top, provides "open in Safari" option through share button
- Instagram: uses custom in-app web view, shows page title and url on top, provides the built in share-sheet, interestingly disabling open in Safari, but enabling "Add to Reading list"
Your current app on the App Store embeds third party content in an in-app web view, without showing the title or original URL on top and without being able to open the link in Safari.
I suggest you to either use SFSafariViewController for the third party content or mimic something similar with a proper title bar and and share button with Open in Safari option.