VR mode Rainbow app versus Litchi app.

Why can’t Litchi make their app make adjustments in VR mode like the Rainbow app can?
Like shrinking the caracters. They are really (too) huge.
(I made a screen recording on my smartphone of this to let you kow what I mean, but I don’t know how to attache the video in this post, so i placed it on YT: Rainbow app VR - YouTube)