iPhone ZOOM for Incline % on Screen

Do you use an iPhone (probably works for iPad and maybe something similar for all platforms really)? Do you use the Incline % displayed on the screen in the top right corner but find it hard to read because it is so small?

I found the iPhone Zoom setting. I set the window to be as small as possible and as zoomed in as possible.

I manually set my treadmill incline to match what is on the screen. Anything downhill is just 0% flat on my treadmill.

The screen shot doesn’t actually show the zoomed image in the zoom window, but it displays a nice big -1% in the window for me. I just watch that number as I run if I want to easily see it.