Menlo Park, California (Reuters): The Facebook Inc owned company claimed Instagram's user increased over 600 million, as new features helped it gain popularity.

The company said in a blog post the photo-sharing app added 100 million users since June when it last announced its 500 million user milestone.

The company launched Instagram Stories since then, its picture and video slideshow feature, identical to the signature function of rival Snap Inc's Snapchat.

Instagram in September updated its safety tools by allowing users to control the comments posted on their pictures and videos to combat increasing cases of online trolling.

According to research firm eMarketer, the company, which is expected to add to Facebook's revenue, is on track to generate $1.5 billion in advertising revenue this year.