Nearly every Mac graphic and design app has a built-in ruler, grid guides, and a loupe, so why would anyone need a standalone app that does much the same thing? Just as you can never have too many fonts, you can never have too many graphic design tools.
Flexible Onscreen Rulers
Despite my terrific record at being able to see an image out of alignment by a single pixel, I keep tools like FlexRuler on my Mac because, well, it does some very cool things.
Imagine being able to create a bunch on onscreen rulers in every size, attach grids as needed, even customize both color and transparency.
That’s what FlexRuler does. It’s flexible, hence the name. Get it? OK. Moving on.
Rulers can be shaped into any rectangle anywhere on the screen. Each can have its own color and even the same color rulers can have a different transparency.
Alignment grids are easily popped into place, and no onscreen graphic utility is truly complete unless it has a magnifying Loupe that captures pixel colors and helps with grid and ruler alignment.
Take a look.
Oddly, FlexRuler on the Mac App Store doesn’t give many feature details, but fortunately there’s a decent Vimeo video which walks through how to use the app in a variety of graphic layouts.
It’s priced right, too, at one dollar less than my minimum threshold for an app that does not have a free trial.