Use a free QR now. Use an operational QR when work repeats.
Operational QR keeps the printed code stable while the checklist, owner, record and follow-up evolve behind it.
Best free-tool use
Producing a consistent set of QR files and printable labels from a spreadsheet.
Upgrade when
Each label represents an asset or checkpoint whose status and history must be managed.
Operational value
Move from printed files to operational assets with scan history and recurring field work.