I was wondering how that could be no kyc if the app ask me already my contact number??? Would not that be already a huge identification as mobile companies share info with local authorities for peanuts??? 

 Check this out. The way we handle it we don’t even know your phone number…. https://blog.vexl.it/understanding-vexl-security-privacy-and-building-a-web-of-trust-867710d4a6fe