App Inventor sounds like it was designed to do that: http://sites.google.com/site/appinventorhelp/ http://sites.google.com/site/appinventorhelp/ (Fun fact: Ha

App Inventor sounds like it was designed to do that: http://sites.google.com/site/appinventorhelp/ http://sites.google.com/site/appinventorhelp/ (Fun fact: Hal Abelson is now working with Google on App Inventor. That would explain why it has some Scheme code underneath.)