Our job as educators is to wisely choose apps. We look for several things in a good app.
1. Is it educational?
2. Is it free, or WORTH the $?
3. Does it adapt to the individual learner or is it able to differentiate?
4. Does it allow you to do multiple things within the app? For example, one of our best apps is called 30hands, and it allows you to do multimedia learning with science, or math, or reading, etc.