Facebook is working on a photo-sharing application for the iPhone, TechCrunch is reporting.

The technology news site claims it has acquired a 50MB file containing images and documents that describe in detail a Facebook application that will allow users to share photos with others. TechCrunch did not reveal too many details on the service, saying only that the app "appears to be Path meets Instagram meets Color meets With."

Path is a social network for a person and his or her closest 50 friends, while Instagram offers photo sharing on the iPhone. Color allows users to take photos, videos, and conversations from different devices and combine all those into a group album. With is "a fun, simple way to share who you're with."

Perhaps the most surprising takeaway from TechCrunch's report is that the alleged app won't be integrated into Facebook's existing iPhone program. Instead, the service will be a standalone option for users that leverages Facebook's social graph.

For its part, Facebook hasn't announced anything related to a photo-sharing app, and the social network declined to comment on TechCrunch's story. However, the company has been interested in photo sharing in the past. Last year, Facebook acquired photo-sharing service Divvyshot for an undisclosed sum. Divvyshot, which allowed users to engage in group photo sharing and editing, was subsequently shut down.

TechCrunch is promising more details on Facebook's supposedly new app in the coming days.