I really like the freemium approach, it…

I really like the freemium approach, it seems to work well and attract and retain the most users. They periodic advertising seems to be effective and make up for the patrons not switching to premium. While I’m a big fan of the app and would totally utilize it in the classroom or in my personal life. I read some formes about issues with new changes that many patrons are upset with this new model. For example the amount of lessons per level. While this is just a little change its easy to loose patrons who don’t pay anything. All that aside this app is still crushing it!