The app is spreading fast because it was in google play (if I recall correctly) before being taken down. Also there are many telegram groups that people use to learn about how to download and install it
it's never have been officially on google play for obvious reasons, someone must be accountable to publish an app on google play, and if you give fake data you are going to have your app removed.
It's also one of the serious security problems with this app, you can't have an official source, and forcing people to install through direct apk installation, it can be replaced by a rogue modified version very easily.
It's also one of the serious security problems with this app, you can't have an official source, and forcing people to install through direct apk installation, it can be replaced by a rogue modified version very easily.