Class Dojo

Class Dojo is a free app with icons of amusing monsters for each student.  

First you set up your class on your laptop by going to http://teach.classdojo.com/login and registering. Add a class and edit the class to add names and the behaviour you want to address (e.g. +1 for being on task, -1 for chatting in Arabic).

Then you run the class either as a website on the teacher’s computer or using the iPad app and add/subtract points as the lesson goes along.  

  

At the end, you can run reports which will be very helpful when it comes to writing reports about study skills.

Question:

Have you found any similar free apps?