One of the problems with kid-centric apps and services is that you need to be really careful about the kind of content you put on there, something that Google has had to learn first hand with YouTube Kids. The idea behind the app was to create a video sharing service that parents could let their kids use without having to worry about graphic content, as well as make it easier for advertisers to target children with their ads. This had led many people to criticize Google, with the most recent of these criticisms relating to the abundance of ads for sugary drinks and snacks.
