It’s good but not perfect
After purchasing the premium subscription for my AZ 104, I began to study with this app. This app certainly shouldn’t be your only method used to study. The questions in the quizzes are relatively easy. They are also sometimes inaccurate. Some of the questions don’t even make sense when you read them out loud I feel like there might be a translation issue. I’ve contacted the developer for a refund however, I haven’t heard anything a week later. The reason I say this app is good it’s because it’s convenient and comprehensive. It’s very well organized and a nice solution for studying on the go.