The instant messaging application WhatsApp yesterday again be available for download on Apple’s iTunes store after the company behind this tool is withdrawn last Friday to replace it with “a new version.”

WhatsApp has not informed why he left iTunes, but had to deny in its official blog that the use of the service would be free (iPhoneusers can use an unlimited after paying for downloading).

The application, compatible with mobile operating systemAndroid, iOS, Blackberry and Symbian, manages a flow thatexceeds 1,000 billion messages per day.