Can Apple keep the iPhone app store clean?

(CNN) -- Nude photos and other potentially objectionable materials have been showing up in the iPhone application store in recent weeks, raising questions about Apple's ability to control iPhone content.

In the most recent example, a nude photo of a young woman, reported to be 15 years old, showed up on an iPhone application called "BeautyMeter," according to Wired.com and Krapps.com, an app review site.

CNN could not independently confirm the young woman's age.

The photo, which apparently was submitted by one of the photo-sharing app's users, prompted Apple to remove the entire mobile application from its online store.

Funnymals, maker of the BeautyMeter app, which lets users upload and posts photos of people and then rank them based on "hotness," says in a statement on its Web site that it agrees with Apple's decision to yank the phone application from its online store. Funnymals also says its policies prohibit people from posting nude photos to the application.

Neither Funnymals nor Apple responded to requests for comment.

About a week earlier, another mobile phone application, "Hottest Girl," showcased a photo of a topless woman and also was pulled from the iPhone app store.

"Apple will not distribute applications that contain inappropriate content, such as pornography," a Apple company spokesman said at the time.

The explicit material is putting attention on Apple's attempts to filter out potentially objectionable apps before they're posted on its app store.

The iPhone app store, with more than 50,000 applications, is the most popular entertainment and information venue of its kind for mobile phones.

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Seems like Apple has a few problems on their hands!