tinder

As one of three publicly traded dating app companies, Grindr dominates the dating app market along with Bumble and Match Group, which owns Tinder and Hinge.

The court heard that Morrow met all of the women on Tinder, and then chatted to them on Snapchat where intimate images were initially shared on a consensual basis.

She said she met him on Tinder and that they chatted on Snapchat.

Grace, not her real name, told BBC News NI she came into contact with him through Tinder.

"To me, being catfished means you are on a Tinder profile and your pictures look different to what you look like in real life," she said.