One month after its $1 billion acquisition of Instagram, Facebook has added filters to one of its apps.

Users of Facebook’s app for non-smartphones, “Facebook for Every Phone,” can now tweak their photos with Sepia or Grayscale filters similar to those Instagram offers.

Instagram had nothing to do with the new feature, a Facebook spokesperson told Inside Facebook. Rather, the apps were developed at an employee hackathon.

The New York TImes reported in August 2011 that Facebook was developing a set of filters for its mobile app “with the hopes of drawing off fans of Instagram.”

Given its recent $1 billion acquisition of Instagram, that is no longer Facebook’s motive. But it could help users of phones that can’t run the Instagram app understand what the fuss is all about.

The company did not immediately respond to a request for comment on whether it would be expanding the feature to its other apps.

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