Need some help using AppInventor by MIT? Use this great set of tutorials, featuring interactive quiz questions for every tutorial. Featured applications to build: Text to speech Painter Pro Camel Mash Times Tables Bounding Ball All feature a fully working application that can be expanded to make an App that would be Google App store ready. Completely free, and supported by a set of teaching resources at: https://www.tes.com/teaching-resource/appinventor-computing-programming-scheme-of-work-for-ks3-11330823