At first, I really enjoyed it. I appreciate how it kept track of my work. I also like that it provides videos, examples, practice, tests, and a final exam. Just suddenly, even though I did not delete this app, it lost all my progress which made me bummed out. I had a hard time navigating as there is no menu, and I tried to restore? I am not sure anymore. I’m disappointed because I did pay for a subscription for it to only lose all my progress. I just wish it kept my progress cause now I don’t know if I want to continue using this.