True caller is very helpful for unknown numbers. its one of the best app to know about the unknown number.
Many time we are busy and suddenly we got the call from unknown number. How we will decide that its impotent call or not. True caller help us.
This app tell us about the caller his/her name and location. If you will not see the name but you can see the location so you can guess. Especially its help to know about the company call like if any bank or company calling you so you can cancel the call even you can block the number.
This app is really very helpful.