( CNN ) -- The age rating for new mobile video-sharing app Vine has been raised to 17+ , meaning appropriate for users 17 and older , after it was flooded with pornographic images . Since its launch two weeks ago , the Twitter-owned Vine had been rated 12+ in Apple 's App Store , the only place it is currently available . But sexually explicit video clips almost immediately began appearing within the app , including one mistakenly showcased in its `` Editor 's Picks '' section , drawing outrage from some users . The new rating , for such criteria as `` frequent/intense sexual content or nudity , '' means users wishing to download Vine must click on a window promising that they are over 17 . There is no age-verification system , however , and nothing to stop younger users from downloading the app . The changes are part of an update to Vine , announced Wednesday , that also allow users to block or report a profile they find offensive . Does Twitter 's Vine have a porn problem ? Twitter had already taken steps last week to restrict how users can share sexually explicit clips . Hashtags for such search terms as `` porn , '' `` nude , '' `` sex '' and `` naked '' no longer delivered any results . The issue made headlines January 28 when Vine users noticed a video of what was described as hardcore pornography showcased in the prominent Editor 's Picks section of the mobile app . Twitter pulled the clip and apologized , saying it was a mistake . Tumblr , the popular blogging platform that includes some porn among its roughly 92 million blogs , soon afterwards reclassified itself with the 17+ tag . Apps are typically submitted to Apple with a suggested age rating , although Apple can request that the rating be changed . In the App Store , 17+ is the most restrictive rating . App stores : Gatekeepers , or censors of the mobile Web ?
The age rating for new mobile video-sharing app Vine has been raised to 17+ . Sexually explicit video clips have been appearing within the app . Since its launch two weeks ago , the Twitter-owned Vine app had been rated 12+ .