Startup 500px’s photo sharing app 500px and client app ISO500 were today pulled from the Apple App Store, according to a report from TechCrunch. An Apple reviewer told 500px that the apps were yanked because of an updated version of 500px for iOS, which “allowed users to search for nude photos in the app.”

500px COO Evegeny Tchebotarev yesterday told the Cupertino, Calif.-based corporation that it could make the change to its apps to address the nudity concern, but Apple didn’t give 500px the time to modify its app’s update, and pulled 500px’s apps from the App Store today, says TechCrunch.

This isn’t 500px’s first go-around with concerns over nudity or “not safe for work” (NSFW) content in its apps. In an effort to appeal to all age groups, 500px updated its 500px iPad app in May 2012, removing NSFW photos. Although users who had an account could turn off a safe search setting on 500px’s website, allowing the user to see NSFW content.

Tchebotarev told TechCrunch that 500px is making the necessary changes to its app to fix the nude photo problem, and will submit the app immediately to Apple for reinstatement in the App Store.