Ask HN: Help validate this idea

Idea: Starfall.com for the iPad generation<p>Problem: Kids will learn on mobile devices. Nothing currently exists as an educational "one stop shop". Parents need a brand to trust.<p>Solution: Educational app system for tablets. Progression based on a child's mastery.<p>As a parent of a young child (he is 2 years old) - I'm constantly searching for new things to help my child develop. He's learned a ton from traditional physical toys/books and I spend a ton of time playing with him. I know he's benefiting from this interaction.<p>At the same time, he's exposed to many digital devices (my iphone, ipad, tv, etc). Digital devices are the norm for him. If we skip forward a decade, I imagine that most kids would be learning primarily from mobile devices.<p>There are indie educational apps - things that teach individual learning skills like the alphabet, sounds, or colors. These separate apps when combined together could make up a "cohesive" learning set that provides effective learning progression. But that requires a parent to pick the individual apps and gauge when their child is ready for the next app. Also you have the problem of varying app quality.<p>The other option is a web learning system, like Starfall.com. This is well received and recommended by parents/educators - but they are designed for computer use. Kids interact through a mouse and keyboard. But newer generation kids grow up on touch based interfaces. I know when my kid plays with my computer, he's always trying to touch the screen.<p>I would pay a small subscription ($3-7/month) for something like a khanacademy app for preschoolers. So I figure why not try to make it myself. I've asked friends (who are parents) and they've all said they would buy a sub after they've seen the product. But I don't have one.<p>How can I validate this idea?<p>Thanks for the help.