Following the Parents' Online Safety training, you may find the information useful by the NSPCC/O2:
https://www.nspcc.org.uk/preventing-abuse/keeping-children-safe/share-aware - Useful videos and tools for parents to use to engage their children in discussions about online safety.
https://www.net-aware.org.uk – tool for parents to find out about latest app and social media sites.
Please see the images below offering important information about online apps. You are able to download these as a PDF.