I really miss the Dashboard and the Mastery challenges for the KhanAcademy App. I end up using the website on my phone because I like to level up faster and get a good mix of math from several different areas. Also, it is nice to know how much you have done and what is left to learn which you can see on the dashboard on the website. Please add these features to the App so we can enjoy KhanAcademy more, have a better overview of how we are doing and learn more efficient!