• Publisher: NAVER JAPAN
• Line is considered the leading opponent of the famous app Viber call. This application allows users to make calls, free messaging and using the Internet connection.

• Publisher: Kakao
• KakaoTalk for iOS , With LINE , Viber , Zalo , WhatsApp Messenger ... KakaoTalk for iOS is one of the chat service and free phone calls are the most popular today.

• Publisher: LINE
• LINE for iOS , LINE is considered the leading opponent of the famous app Viber call . This application allows users to make calls, free messaging and using the Internet connection .

• Publisher: Google
• Hangouts for iOS , Hangouts app for iOS is free chat and video call , stable quality and convenience on the iPhone , iPad and iPod Touch . Hangouts is the new name of Google Talk - a touch of Google apps with similar features as the competition is Viber , Zalo , WhatsApp Messenger ,