While active, you can scroll your mouse wheel to dynamically change the zoom level (e.g., from 1.5x to 5x) without digging through a settings menu.
Negative feedback usually centers on the plain user interface (some call it “dated”) and the lack of a 64-bit specific build (it runs as 32-bit but works fine on 64-bit systems). Moo0 Magnifier 1.19 -
