18 and older

In the past week scrolling through this "sex and relationships" part of this app I have seen what looks like to me a lot of 16 year old high school girls. How in anyway is this app appropriate for a child?! I personally love the app. But it is very annoying seeing little girls posting things. I was sexually active at the age of 16 obviously there were no smart phones with apps then but if there was I certainly would not be on one like this. I would confide in my friends my age. Just my opinion though.