Love it!
I love how informative, and visual, this app is. As others have mentioned, there is no audio for the videos (although, there is a description of the technique below each one), but I do admire that there is a 3D model of the area being worked on beside the videos. I’m assuming having no audio was intentional, and—for me—that isn’t a huge issue… it just makes the associated visual feel a little “lifeless”. I believe even just having the typical meditative audio we use during massage sessions playing in the background would be a nice touch.