I’ve been using some work related iOS apps which have a frustrating habit of kicking you out to a Safari browser to view something, and then leaving it up to you (the user) to find your way back into the app and also to deal with the left over Safari windows later. Had this app developer paid attention to the interface guidelines, perhaps they would have noticed a better design pattern.
Instead of sending the user to an external Safari browser session (which has no good options for navigating “back” to the part of your app the user was at);
incorporate one of these into your app:
iOS web content:
NSUrlConnection to download content
OffscreenRendererViewController – does a background conversion of the web content to create an image of that page and then display the image to the user within the app’s view.