Is "Facebook on Android" a browser or an APP ?

[missu]

Hello!

I am doing my research on monetizer where I find a broswer "Facebook on Android".

I wanna know, if the STATs is from FB ads or just a facebook broswer ?

To be more precisle, if I find "Facebook on Android" performs good in a GEO, does that mean I can expect some success if I send propellerAds pop traffic