No extra in app buying?

Actually?The final time l play this recreation was virtually eight years in the past. I left the sport due to uncountless grinding of unlocking new sharks.Nevertheless l discovered it on my recreation go checklist in the present day,and it mentioned that there's no advertisements or buying now. So what’s going to it’s?Is it not grinding anymore? If that’s the case ,I’m will to get pleasure from it once more.BTW, I'm an English newbie. So forgive my awkward phrasing.