"It's fun and creative. You can make funny videos."
- it's easy for a child aged 11 to register.
"There is a page which says "You must be at least 14 years of age to use Dubsmash." On this page, you have to input your date-of-birth, although obviously it's very easy to put anything in here."
We asked parents of 8-12 year olds how easy it would be for an 11 year old child to pretend to be a different age to sign up, and whether any checks were in place.