The app i chose is the ballon and static electricity.

This app will help users learn about static electricity and it will help users learn how negative and positive and neutral works. If your learning for the first time how static works this app is kind of helpful.

This app is very easy to use it shows positive, negative, and neutral signs when the ballon has all the negative charges in sticks to the wall because a negative to a negative connect. This app is very easy to use it very self explanatory its very easy to guide, it took me about 5-10 minutes to figure how to get the app to function the ay i wanted it to.