First of all let me ask you who told you that you can track any mobile number just with a simple mobile application that means the syber security team is mad and wasting their time sitting in their office and whenever there is any crime sean they are definitely going to call you for the investigation.
It’s simple to understand that we just cannot do it and it’s not a simple process which can just be done by using a simple mobile phone application. I have seen many people using these kid of applications and just wasting your time for no reason.
Please see that there are many applications of this kind which will distract you.