It’s nice! And the color scheme and the grid remind me of this other game I loved back in the day... It had trains in it... If only there was a way to play it again... 🥰 (and not on my old iPod Touch from 2008 that is surprisingly still functional but has like 2 hours of battery life)

It does, and it also provides added value of being an actual ruler thanks to its ability to measure things, while what I described should correctly rather be called a “straightedge” 🙂

If your are only interested in whether things line up and don't actually want to measure distances, there is also the option of just grabbing a random window you already have on your desktop or quickly opening e.g. a file explorer window, and using its edges as rulers. No extra software needed! 😉