Apps timeline By Jaume86 Dec 24, 2003 Skype Dec 24, 2009 Tango Apr 10, 2010 Whatsapp Dec 24, 2010 Viber Dec 24, 2010 Line Dec 24, 2011 Zello Walkie Talkie Dec 24, 2011 Voxer Walkie Talkie PTT Dec 24, 2011 Snapchat Dec 24, 2011 WeChat Dec 24, 2013 Telegram
