I run structured cabling jobs (data drops, racks, the usual) and for years I quoted every job the same painful way: print the floor plan, trace runs with a ruler, guess at a margin, retype everything into a spreadsheet, then build a PDF for the client by hand. Every single time I either over-ordered cable or came up short mid-install.
So I built myself a tool that skips all of that: you drop in a photo or PDF of the floor plan, calibrate the scale with two points, and trace the actual cable runs on your phone or tablet right there on site. It spits out exact meters per run, and generates a PDF report for the client with the plan, cable list, and materials breakdown. It also works completely offline, since half the jobs I do have zero signal indoors.
It's been my daily driver for a while now and it's finally in a state I'm not embarrassed to show people. Not trying to sell anything hard here — mostly curious if this is a problem other installers actually deal with, or if I'm the only one who was still doing this with a ruler and a spreadsheet. Happy to answer questions about how it works.