Fotodelningsappen go about the veteran in the number of active users.

Over the past two years, Instagram more than doubled its number of active users per month to over 500 million.

The company claims in a blog post that was posted on June 21, 2016.

Up to 10 million new members reportedly joined every month.

Now the gap between Instagram and Twitter competitor more noticeable than ever, especially in the US where the former has 100 million active users per month against Twitter's 60 million.

In contrast, Twitter's estimated total number of active users per month to be around 310 million.

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