You don't need a survey platform subscription to collect structured feedback. A free Google Form (or similar) plus a QR code covers most small business needs — no code, no monthly fee.

Build the form first
Keep it to 3-5 questions max. A rating scale plus one open text box gets far more completed responses than a ten-question form — length is the biggest reason people abandon feedback forms halfway through.
Turn the form link into a QR code
Copy the form's share link and paste it into our website QR generator. That's the whole setup — no account, no integration needed on our side.
Where placement changes response rate
A QR on the receipt gets scanned later, if at all. A QR on the table with a one-line prompt ("Rate today's visit — 30 seconds") scanned in the moment gets far more responses, because the experience is still fresh.
Keep an eye on where it lives
Google Forms links don't expire, but if you ever rebuild the form under a new link, the old QR code will point to a dead form. Reprint the sign, don't just update the form and hope the QR still works.