If you were to use a service (e.g facebook) that offers the same features as a web application ( you have to go through a browser) and as a mobile app ( you have to download the app), which would you choose?

Hi guys, please do well to answer this poll. It'll only take a few seconds of your time. Your answer will be very helpful to me. If you were to use a service (e.g facebook) that offers the same features as a web application (using a browser) and as a mobile app (you have to download the app), which one would you prefer?