WhatsApp on Monday announced that it has grown huge with as many as 600 million active monthly users.
Announcing the achievement on Twitter, CEO and co-founder Jan Koum wrote that the instant messaging service is now currently serving 600,000,000 monthly active users.
It was back in April, when Koum last announced that WhatsApp has crossed 500 million active users, which means it just took the messaging service a span of 4 months to add another 100 million monthly active users.
Following WhatsApp in the instant messaging service league is Tencent’s WeChat app with 438 million active users, Line with 400 million active monthly users as of April and Viber with 100 million active users.
Koum, stressing on the point that it’s the active user numbers and not just registered users, noted that active and registered are very different types of numbers. While, registered users denote the number of users who have signed up for the service, active users suggest how many are actually using the service.
Facebook recently acquired WhatsApp for $19 billion. The messaging service however continued to operate independently after the acquisition.
Despite the huge popularity, the messaging service is yet to build a strong foothold in the United States, while developing markets are its strong base.
WhatsApp is also reportedly working on adding voice calling service to its portfolio, but the project has likely run into delays for some or the other reasons.