There's an (unverified) myth that retention on mobile apps is better. This is one of those things that marketing people keep telling each other without ever verifying the facts. (Unless you deliberately make the web version inferior, of course.) The reasoning behind it is that you should take real estate on the user's home screen at all costs, because your app's icon will serve as a reminder and people will allegedly…
My Reddit usage has basically plummeted to 0 at this point because of their pushing me towards an app. I think there are provable cases where an app almost certainly leads to less retention than more and something like Reddit, whose value lies in allowing you to explore the internet is almost certainly one of them.
I found a good trick was to use AN app, just not their app. Apollo on iOS and Boost on android are really good alternatives to the official Reddit app, which is littered with ads.