NYC-based Aviary, the photo editing API which wants to power every mobile photo app on the planet, has kept quite busy since passing the 1 billion photos milestone back in Septemeber. Now, the company is announcing it has passed 3 billion total photos edited, 2 million of which occurred over the past six months.

This news follows a series of major partnerships with the likes of Yahoo, Photobucket, Walgreens and Twitter — it’s noteworthy, however, that none of these stats include data from the company’s Twitter integration. In addition, Aviary shares that its API is now in use in over 3,500 apps, 1,000 of which were added in the past three months, and it currently has 35 million monthly active users.

We’ve followed Aviary closely over the past 18 months, from the launch of its Windows Phone SDK and the release of its own iOS and Android apps to its partnership with Mixi and We have also attended every one of its Photo Hack Days (an image-focused hackathon) — the fourth of which has just been announced, and will be held on the weekend of April 6th at Facebook HQ in Menlo Park.

In celebration the company has charted its growth, which we have included below:

Screen Shot 2013-03-05 at 11.56.23 AM

For more on Photo Hack Day #4, head here.

Featured image by Barry Skeates