If it’s a service I use regularly on my phone like Lemmy then an app usually does provide a better experience. The UI is usually better optimised and they tend to load faster. However if I’m only using it once, or if I’ve just visited your site then stop trying to get me to use the fucking app! That goes for Reddit as well, I have the app installed but if I’m just trying to view a post because I googled something I don’t want to be forced into the app