I had used other online sources for testing from places like Gliem but there soft ware was hard to use and inconvenient. I was recommended this from a friend and bought it, which for $10 I thought was very reasonable. The app has all the questions you will see on the test and many are word for word the same as what I saw. The best part is you can take many practice tests and find out what you missed, restudy and take them again. With the app on my iPhone it was a great way to burn time and prep for the test. I would definitely recommend the app and I will be getting the IFR version in a year or so when I go for my instrument rating.
B-rad17 about Private Pilot Test Prep