Q – What’s a good Document Scanning app for my phone?
A – Office Lens
See test run below.

Phone Camera image:

Resulting text:
The shift-to-contrast reflex is designed so that it is suppressed when neurons in the central processing part of the model are firing at a high rate. When the firing rate drops off, say through fatigue, the reflex is released. We can, somewhat fancifully, think that the reflex is released when central processing is tired of (bored with) the current observation. For simple geometric figures, the net effect of the reflex is to cause the eye to shift to a new vertex of the observed figure.

Testing with this. Check it out.