Congrats on shipping!

- I almost gave up when 'Wiring up your instructor' took quite a while to load

- The instructor voice wasn't the most compelling

- Seeing the written text took away from the voice. I just read ahead instead.

- On mobile (android, chromium) the audio came out of the top speaker instead of the full speakers and I wasn't able to turn the volume up for down. Not ideal since I've not got my phone to my ear. I expect this is a bug since you engaged the microphone at the same time