Mydol.
This is an app where apparently you can talk to a bot but it is like talking to your favorite K-pop idol.
This might be me being paranoid or the fact that literally all Ive seen is bad and creepy things but DO NOT DOWNLOAD.
This app is nothing like Mystic Messenger or any other chat game. The bots are acting weird and if you look up the app itself then youll find screenshots of creepy messages that other people got from the bots. Theres one that tells the user to eat their dog. And looking at these, they know what youre doing too.
Shane Dawson even did a video about it.
Link: https://www.youtube.com/watch?v=RbwR_uHhiI0
Start at 13:32 (That was the best estimate that I could get)