maybe it's a silly question. When I opened it from desktop it tells me to go to my phone, and then I open it from my phone, and then it shows me this mobile web

maybe it's a silly question. When I opened it from desktop it tells me to go to my phone, and then I open it from my phone, and then it shows me this mobile web app (not a native app). What's the point of telling me to open from my phone if it's only a web app anyway?