Facebook has revealed its Messenger app has reached a billion users, making it one of the most popular apps in the world.

This is a significant increase from the 900 million it claimed in April during the launch of Messenger Codes – circular patterns around a user s profile photo, which can be scanned to start a chat conversation with that person.

Since being separated from the main Facebook app which has 1.5 billion monthly users two years ago, the Messenger app appears to be catching up with its parent.

We re grateful for all the people who are sending billions of messages every day and we hope to send 1 billion thank yous in the form of a new floating balloon gift that everyone can use to celebrate, a spokesman for Facebook wrote in a blog post.

Facebook Messenger s latest milestone places it among the most popular apps in the world – alongside Facebook and WhatsApp which is also owned by the social network company .

This comes after Facebook announced last month its photo-sharing app Instagram had reached 500 million users.

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