The creators talked about it in an interview and to saw the least - it was nasty. (Read it Here)
The article addressed the concerns of schools and people, like Raulf Swenson the Grossmont Union High School District Superintendent.
“We wish that they didn't exist. We wish there was a way to control them, but the world has changed."
“The adults in our schools, the adults in our community…making sure that we’re not allowing our kids to roam around unchaperoned, basically, in a world that is full of potential harm and potential danger to them."
Then it went to the CEO of Burn Book to get answers why they put out this horrible app.
"But he is pointing the finger at parents instead of accepting blame when people use the app inappropriately. The app is rated 17+ in the app store. He said parents should be aware of what their children are doing.
'If you set parental restrictions, it won’t let you download any app that’s rated 17 and older,” Lucas said.
“When someone is holding up a vulgar sign, it’s not the pen’s fault — it’s not the paper’s fault,” Lucas said. “It is the person holding the sign. They’re parents. It sounds harsh, but they need to know what their kids are doing.”
Also if you look on their twitter (Here), the people who run it are rude to people, and claim their app is harmless.