The app has crashed on me twice now. Sometimes it freezes on a spinning red circle when trying to load a lesson. Also, when scrolling horizontally through the lessons, there is no indicator showing that I've completed a specific video/lesson so it's hard to know where I left off. Also, the app drains battery and makes phone hot. Thirty minutes on the app used 24% of the battery. I've had the same experience while using the app on my Pixel 7 Pro and my iPad.