Three working apps, the kind you will be able to build yourself by the end of this unit. Try them with a partner. As you go, write down at least two places where an app seems to be keeping track of a piece of information, or using it to decide what to do.
Press Run to start the app.
A rock that evolves, if you are patient enough.
What is this app keeping track of, and what does it use it for?
Write your answer down first. Then check it.
It counts your clicks, and it uses that count twice: to decide when the rock evolves, and to decide whether you can afford an upgrade. Buying one spends clicks and changes what a single click is worth from then on.
Want to build one of these? Open the App Builder