Mared Parry, who was groomed online as a teenager, now shares her story and campaigns for change in a bid to protect other youngsters.
People are being encouraged to download the app in order to help stop the spread of coronavirus and protect themselves as case numbers rise.
Young people in Wales have told ITV News the video-sharing social media platform TikTok has helped them get through lockdown, but parents are being warned about the potential dangers of the app.