Six hundred million people use WhatsApp every month

Just four months ago, WhatsApp announced that it had passed the 500 million user milestone. That number was up 50 million from two months prior, when the company revealed that it had 450 million active users. This past weekend, CEO Jan Koum confirmed that WhatsApp continues to add users at the same steady pace.

In a tweet published late last night, Koum divulged that WhatsApp now serves 600 million monthly active users. That’s another 100 million users in four months. We’d love to know how many registered users the app has in total, as that number is probably a lot higher (though, admittedly, not as useful as knowing the active users). Unfortunately, Koum offers no further information on the activity of WhatsApp’s registered users, such as how many messages or photos they’re sending each day. Last we heard, users were sending more than 700 million photos every day. Not bad for a company that’s only been around for five years.

Available for Android, iOS, Blackberry, Windows Phone, and Nokia S60 and S40 devices, WhatsApp added the ability to send pictures soon after launch in 2009 and users can now send photos, video, voice messages, and texts as well as create groups with up to 50 participants.

[source]Twitter[/source][via]The Next Web[/via]