Truecaller is a privacy killer app. Means it is a kind of app that shares all of your contact saved in your phone, to public.
One of the main reason of having Truecaller is, any users can block unwanted calls from a particular country. There are settings in Truecaller with the help of those one can simply block those annoying calls.
Truecaller works as a telephone directory. When a user install Truecaller and register their phone no. on it. Truecaller’s database will sync all contacts saved on user’s mobile phone.
Truecaller equipped with user friendly GUI. And provide more informations about any phone no. You can see the location also. You can personalise your profile by adding photo, link with your social media accounts like g+ or fb. You can also add your address.