IHS Technology said leading messaging apps such as Facebook Messenger, Wechat and Snapchat achieved a combined user base of about 4.2 billion by the end of 2015. This is up 38 per cent from the 3.1 billion achieved in 2014. However, IHS Technology noted that the overall growth rate is slowing as the market matures. Facebook and Tencent dominate the global messaging app user base, accounting for over 70 per cent of total selected messaging apps. Both companies have grown their lead over other messaging apps since 2011. Report