Twitter’s new video sharing app Vine has been given adult rating on Apple’s store.
Vine has had its age rating increased to 17+ on Apple''s store, the highest option.
The software had previously been rated suitable for 12-year-olds.
The move comes in the wake of complaints that some of its six-second segments were pornographic.
According to the BBC, Vine is not yet available for Android, but Google Play rates its 500px app as having a "high maturity" content rating, while Tumblr is marked as "low maturity".
The app had previously made headlines after one of its Editor''s Pick showed a couple engaged in a sexual act.
Shortly after the clip''s selection it entered the app''s "popular now" list, signalling it was one of the product''s most viewed videos.
Twitter later apologised, blaming "human error".