App is too rigid and does not allow for you to skip through steps you are familiar with once you've watched the videos a few times. Additionally, if you test and get a negative, the app will suggest retesting in 1-2 days. If you go back on day 2, it will say you're past the retesting day. All in all, this app is only really useful as an individual user for keeping track of your results over time. Otherwise, just watch the vids once and do the timer yourself.