Perfect! This is the sole study guide I used this past year for studying. I started about 2 months prior to testing. I am not the best at studying and I get distracted easily. The app is very well organized and easy to use. Well worth the $50. I just made E-5 my first time testing thanks to this app. (PDG Central for Android).

I recommend PDG Advisor as well! I made E-5 first time by 22.5 points WITH only a promote! (Facebook)

Thanks for inventing PDG Advisor. I used the program and achieved my highest score ever. I made MSgt my first time in a difficult year! If you want results, buy this program!