Hi,
At the bottom of the app screen is a row of black control buttons. If you press the one with the lines and 2 music notes, you’ll see a list of use options — often just Synthetic, Audio Only, and Video. If you select “Audio Only” rather than “Video” the video screen will disappear. I sometimes use “Synthetic” if I’m having trouble following a series of notes or rhythms in the Audio Only.
I usually also go to the options (the cogwheel) and disable display of the chord fingering charts so that the tab and musical notes have more room to display in screen.
You can also set the app to replay selected areas indefinitely using that circular icon on the bottom of the app and the % icon lets you set to different speeds.
For most of the practice I do, I use another app — Amazing Slowdowner, but I’ve found this RockClass App really handy a lot of times.
Linda