Overall, the questions are great for reviewing. However, there are several bugs in this app. Question of the day never updates, previous answer selections will appear on the following questions (this is during the testing and reviewing), and some questions don’t have the correct answer available for selection. I have seen several questions where an answer that is correct was marked as incorrect. Then in the review, the answer description will state that the “incorrect” answer is in fact correct.
The app has a percentage tracker, which is helpful track your progress as you interact with the app. However, the excessive glitches make the tracker inaccurate. You may miss answers due to their errors. Also, if your are not careful, you may study the incorrect information not realizing the app has errors within their own questions.
All in all I’m making due with these bugs, but disappointed in all the hoops I have to jump through to study with the app.