App "500px" has been removed by Apple after customers complained about "possible child pornography."
500px is a popular photography app that allows users to upload pictures. It has been downloaded over a million times. Apple now says the app has clearly violated its guidelines.
"The app was removed from the App Store for featuring pornographic images and material, a clear violation of our guidelines," the company said. "We also received customer complaints about possible child pornography."
They have asked the makers of 500px to put in safeguards to protect against pornographic images being uploaded.
The nature of the images customers complained about has not been revealed.
Google still has the app in its app store and has not released statements about the controversy.
The app's developers, based in Canada, claim they have nudity filters in place that protect against pornographic images.
"We don't allow pornographic images," 500px's chief operating officer Evgeny Tchebotarev said. "If something's purely pornographic, it's against our terms and it's deleted."
Tchebbotarev admitted there were some photos that featured nudity, but these photos were tasteful and artistic.
"Nudity is filtered by a 'safe search' function which is turned on by default," he said. "It's not about pornography, it's about fine art."
He denies that 500px had received any complaints about child pornography.
It was founded in February of 2010 by Oleg Gutsol and Evgeny Tchebotarev and currently has 20 employees.