Users spent 85 billion hours on WhatsApp in last 3 months

WhatsApp is the top mobile app overall by time spent and its users spent over 85 billion hours on the app in the last three months, app analytics company Apptopia said on Monday. WhatsApp was followed by WeChat and Facebook in terms of time spent. Among gaming apps, Clash of Clans garnered the most time spent of 3.83 billion hours.