This is absolutely an awesome app. I have loved using this. It helps identify the true identity of a unknown number. It also has features to block any unwanted caller.
Just a register with a login id and password and u are good to go with it. you can easily get it in the google store app, and really worthy of use. It is a free ware to get rid of the spams that have been annoying you. Good to use with Blackberry, Android, windows.