Some apps, such as KakaoTalk, try to differentiate themselves from the rest with additional features such as games and customised themes. But it retains the same basic function - providing free calls and messages for smartphone users.
KakaoTalk uses your phone number as the log-in identification.
Alternatively, you can choose to register a Kakao account via e-mail and associate it with your number. The account retains your friend list and profile data, in the event that you change your mobile number.
The Friends tab is the main contact list that reveals only fellow KakaoTalk users from your phonebook. Unlike Fring, the search bar is always there to locate friends on KakaoTalk.
The app accesses your phone book and displays the contact names based on the address book. While the display of fellow KakaoTalk users on the Friends tab keeps the contact list clean and lets you find other users easily, it is not easy to invite more people on board.
This can be done only via a Find tab.