Truecaller is such a great app with a great idea.There are lots of people who are frustrated with fraud calls.This app is best for those people as it give the exact details of the number calling you.
Some time it gives wrong information apart from that it is a great app.You can search a number also.You can block the number disturbing you.Updates are frequntly available which is very nice.It helped me alot, I really liked this app.
