Stamp Card for Burger Shops: Every 10th Burger Free
Every week without a stamp card, regulars go to the competition – without you noticing. Set up in 5 minutes, free up to 100 customers.
"The tenth burger is on us" – everyone knows that promise. The problem is the paper card usually gets lost before it fills up. A digital stamp card in Apple Wallet or Google Wallet stays with the customer. You get a direct channel to message everyone who's ever visited. Here's what mechanics work, what it costs you, and how to set it up in five minutes.
How often do customers come and what does the reward really cost?
Burger shops sit between a quick-service stand and a restaurant. The typical bill is €12 to €18 per person (burger, fries, drink). Regular customers come every one to two weeks, occasional customers every four to eight weeks.
The key number is cost of goods (the pure cost of ingredients). An €11 burger usually has a cost of goods around €3 to €4. The reward "free burger" feels like €11 to the customer but costs you only €3.50. That difference is exactly what makes the stamp card so effective.
Example calculation: Your burger costs €11, cost of goods €3.50. The customer pays for nine visits at €15 per bill (€135 total). On the tenth visit, they get a free burger but still order fries and a drink (another €5–6). The reward costs you €3.50. If the card brings that customer in just twice more per year, that's €30 in extra revenue against €3.50 in reward cost.
The right mechanics: 1 scan per transaction
The basic rule: one scan per transaction, no matter how many burgers are ordered. It's fair, fast, and prevents a group order from filling the card in one evening.
- 10 stamps: One burger of your choice free. The classic. Nine paid visits, the tenth burger costs nothing.
- 6 stamps: Free fries. Quick to reach, costs you under a euro. Good as a first reward.
- Double card: 5 stamps for a drink, 10 stamps for a burger. Two goals on one card. The customer gets an early win and stays engaged until the big reward.
The double card is interesting if you have many occasional customers. A free drink after five stamps is a reachable goal for someone who only comes every four weeks. More on how many stamps make sense is in How Many Stamps Until a Reward?.
Self-test: Does a stamp card fit your shop?
- Do you have regular customers who come at least once a month?
- Is your average bill over €10?
- Do you have slow evenings (e.g. Monday, Tuesday) you want to fill?
- Do you have no way to contact customers directly (except when they're in front of you)?
- Do you want to know how often customers come back – without complicated systems?
3 or more yes? A stamp card makes sense for you. You can start free, up to 100 active customers and no credit card needed.
Setup in 5 minutes: Register and pickup counter
In a burger shop, there are two moments when the customer waits: when ordering and while waiting for their order. Both are perfect for the card.
How to introduce the card:
- Display stand at the register. The QR code sits right next to the card reader. Your team says one sentence: "Scan the code, then your tenth burger is free."
- Second display stand at the pickup counter. While waiting for their number, customers look at their phone. A stand with "Your 10th burger is on us" and a QR code gets scanned without anyone needing to say anything.
- Card in Wallet. Customer scans, taps Add, done. The card lives in Apple Wallet or Google Wallet (pre-installed). No download, no account.
- Stamp at payment. Customer shows the card, your team scans it with their smartphone. Scan cooldowns (wait times between scans) prevent the same card from being stamped twice in a short time.
- Redeem with one tap. Card full? Your team sees it when they scan, the free burger is redeemed in the dashboard.
stampa creates the display stand print-ready with your logo and colors. How to position it best is in QR Code Display Stand at the Register.
Push notifications for slow evenings
The paper card can only collect stamps. The digital card can send messages that arrive as Wallet notifications on the lock screen (called push notifications). For burger shops, these four automations make sense:
- Slow-day booster. Monday and Tuesday evenings are slow at many burger shops. "Tonight: double stamps on every visit" shifts visits to slow times without lowering prices.
- Flash sale with time limit. New burger creation, too many buns delivered, rainy weather: "Today only until 9 PM: Two burgers for the price of one." The message is out in seconds. More examples in Flash Sales: 15 Examples.
- Win back inactive customers. If someone hasn't visited in six weeks, they automatically get a message with a small incentive (like an extra stamp on their next visit).
- Birthday offer. A free burger on their birthday often brings a whole group.
Important: Marketing messages only go to customers who checked the marketing box when creating the card. The box is off by default and separate from the card (called opt-in) to keep consent clean.
What happens if you change nothing
Without a stamp card, you have no direct channel to your customers. You don't know who comes how often. You can't deliberately fill slow evenings. Regular customers go to the competition that has a card – and you don't notice because you have no data. Every week without a system, potential repeat customers are lost.
Common mistakes and how to avoid them
| Mistake | Better |
|---|---|
| Stamp per burger instead of per visit | One scan per transaction, clearly communicated on the display stand |
| Reward only "classic burger" | "Burger of your choice" feels more generous and costs barely more |
| Display stand only at register | Second stand at pickup counter where customers are already looking at their phone |
| No messages in the first weeks | After two weeks, send a first flash sale so customers learn about the channel |
| Paper cards running in parallel | Set a cutoff date, transfer old cards digitally for four weeks |
Special case: Delivery: If you deliver via platforms, decide in advance whether those orders earn stamps. Many shops deliberately reward only pickup and dine-in because delivery has commission fees. Write this clearly on the display stand. How to phrase the rules so there's no confusion is in Formulating Stamp Card Rules.
What you'll see after four weeks
The live dashboard shows you active cards, stamps given, repeat customers, and redemptions. stampa also compares a random control group (about ten percent of customers who get no promotions) with the rest. You only see a number like "X additional visits" if the difference is statistically solid. If the data isn't enough yet, the dashboard tells you honestly instead of making up a nice number.
Conclusion
"The tenth burger is on us" is a promise everyone understands. It costs you only €3–4 in cost of goods per redemption. Digital, the card stays with the customer, your team stamps via scan, and you have a channel for flash sales and slow evenings. Effort at the register: one sentence and one scan. With stampa you can start free, up to 100 active customers and no credit card. Set up in five minutes, no risk.