Three weeks after being acquired by Facebook, Face.com announced it will shut down its facial recognition APIs and it has already removed its mobile app Klik from the App Store.

The Israeli company built facial recognition software for web and mobile applications, which could identify and tag people in a photo or help users discover photos of themselves they didn’t know were online. When it announced the acquisition, Face.com said it would continue to support the developer community that uses its APIs. Now the company says it will need to shut down its existing products and services to focus on new efforts at Facebook. The Next Web reports that the APIs will be closed down over the next 30 days, though some developers may be able to request an extension to find an alternative solution.

Face.com’s Klik app, which is no longer available, used face recognition to let users tag their friends in real time. It also allowed users to apply and adjust photo filters based on faces found in an image. These features are likely to be integrated into Facebook’s new standalone camera app.

Face.com founder and CEO Gil Hirsch previously suggested in a blog post that his team would be focused on mobile when it joins the social network company.

“We love building products, and like our friends at Facebook, we think that mobile is a critical part of people’s lives as they both create and consume content, and share content with their social graph,” Hirsch wrote. “By working with Facebook directly, and joining their team, we’ll have more opportunities to build amazing products that will be employed by consumers – that’s all we’ve ever wanted to do.”