I am using this applicatin from around one year.this app is good.it tells u the location of number which calls u.but these app tells u the location of 95% calls and rest it will not able to find out the location.This app will tell u the name of the state from which the sim is bought.it will not give u the information or name of the person who calls u as like other apps like true caller.but overol this app is good because the size of app is very less and it will not give u lots of notification as other apps do.