Rihanna has urged fans to delete Snapchat after the social media app ran an ad making fun of her 2009 beating at the hands of then boyfriend Chris Brown.
Shares of Snap, the company that makes the app, were down 4.7 per cent in trading on Thursday.
"SNAPCHAT I know you know you ain't my fav app out there! But I'm just trying to figure out what the point was with this mess!," the singer wrote on Snapchat on Thursday.
"You spent money to animate something that would intentionally bring shame to DV victims and made a joke of it!!!," she added, referring to domestic violence.
"Shame on you. Throw the whole app-oligy away."
Earlier this week Snapchat apologised and took down an advert on its platform for a mobile video game called "Would You Rather!"
The ad showed pictures of Rihanna and Brown with the captions "Slap Rihanna" and "Punch Chris Brown." Both the ad and the game were unaffiliated with Snapchat.
R&B singer Brown pleaded guilty to assaulting Rihanna in 2009 in an incident that made headlines around the world.
"We are so sorry we made the terrible mistake of allowing it through our review process. We are investigating how that happened so that we can make sure it never happens again," the company said in a statement.