Its very suspicious
Who says that not 90% is based on it?
mhhh bro, stop saying things like that, cuz for that you can ban all sellers on marketplace, yes the one that sell exalcty same shit amazon checker (same source code) for insane price and that's totaly scam since you can get a code.
u can also ban people that write their ebook based on other people ebook (based on 90% of it but just reformulated) there's even a guy saying that his ebook is only based on ebook that he got before lmao
even if I would made the application without this OPEN SOURCE CODE (open source code are made to be takend and improved etc )
it will be the same thing , it's based on snapchat API , so exact same code sir