Upon reading your idea, I was thinking about the amount of young children who also spend so much time on tablets and mobile phones. Maybe a digital version of this would be helpful for even younger children? It would instill a sense of financial discipline and education from a young age, while also entertaining them.
I think Rollston makes a great point in terms of accessibility. I also understand that while Rollston is talking about other communities outside of the USA, I think it can also apply to the US' rural communities. I came across a study via Pew Research which has some information that I think after consideration, could help strengthen this idea even more.
Overall, however, I think financial literacy program outreach through mobile means is a great idea!