QR code labeling is the power-user version of moving box organization. Instead of writing contents on the outside, you stick a QR label on each box, log what is inside in an app, and scan the code to pull up the full list. It is overkill for a studio apartment but a genuine time-saver for a big household, a garage full of gear, or anyone who hates opening five boxes to find the coffee maker.
For a serious QR-labeled move, Sortly is the clear leader, just watch the free-tier item cap. If you want something built for moving specifically and totally free, MoveAdvisor is the pick. Whichever inventory app you choose, build it on top of a real packing plan so the boxes you scan first are actually the ones you need first.