guide apps are perfect for CPA/CPI offers, just make button "Get The Game" and content locker with offersi don't know, you must give it try for yourself
i'm just newbie here on playstore at least 1 yr now, me joining nov 2017,
my apps just wallpaper, ringtones, and guide. but i've focused on guide app for 2018, and i'll say it makes good money for admob
Users downloads guide apps only because they want to get game and they are in wrong place.