I picked App but I say that it depends. In general it's app, but if it's something I use quite infrequently, like Reddit, I go to the website instead because I don't want to install the app. Annoys me a bit that the sites often then ask you if you want to install the app.... No. I don't. That's why I didn't go to the App Store. I also prefer Wikipedia as a website instead of an app, because of how I use wiki. I don't go to Wiki to find something, instead I search for something via Google, and typically Wiki will have a good answer so I'll use their site, but I also want to see other sites on the topic, so a dedicated wiki app is fairly useless for the majority of my usage of wiki, since I'd then still have to do a separate Google search afterwards.