[skissane]

> especially since you can't proceed in your lesson until you watch the video

That's not true. On my iPhone, I just quit the app when a video ad starts playing and then reopen it. For me, the ads play after I've finished a lesson, and doing this it still saves my progress. Quit and restart is quicker than watching some dumb video (and even if it isn't, I'd rather spend my time restarting than watching a video ad)