The best loyalty program for your café
The classic stamp card, reimagined: your guests collect stamps on their phone instead of paper.
e.g. Every 10th coffee free
4/10 Stempel
- Guests scan at checkout – one stamp, done
- No paper, no app – runs in the browser
- See which guests come back regularly
Why loyalty programs work so well for cafés
Cafés have a decisive advantage over other businesses: coffee is a habitual purchase. That makes customer retention especially powerful here.
Daily visits build real habits
Someone who comes in every morning builds a routine. Collecting stamps reinforces that routine — the coffee and the stamp become part of the same ritual. Loyalty doesn't come from advertising; it comes from repetition.
Progress drives the next visit
Psychologists call it the goal gradient effect: the more stamps a card has, the more frequently the customer returns. Someone with 8 of 10 stamps visits sooner than someone with 2 of 10 — even though the reward is the same.
Small rewards, big impact
A free coffee costs you maybe 60 cents in raw ingredients. Your customer experiences it as genuine appreciation. At 10 stamps that's an effective discount of around 10% — on a high-margin product.
You don't need a hundred new customers
50 regulars coming in 20% more often is enough to create meaningful extra revenue. Retaining customers costs 5 to 25 times less than acquiring new ones (Harvard Business Review).
Source: Kivetz, Urminsky & Zheng (2006), Journal of Marketing Research; Harvard Business Review
Where paper stamp cards break down in cafés
Paper stamp cards work — until they don't. Most of the problems are quiet: you don't see them until a regular stops showing up.
- 39% of customers abandon paper programs because they lost the card. Their progress is gone — and most don't come back to start over.
- You don't know who your regulars are. No data means no way to follow up when someone hasn't been in for two weeks.
- Self-stamping is hard to control. Some customers take extra stamps — whether deliberately or by accident.
- Nothing is measurable. You can't tell whether the program is influencing revenue or not. What isn't measured can't be improved.
The principle stays the same: collect stamps, claim a reward. Only the medium gets better.
Source: Statista / Loopy Loyalty
What actually works well in cafés
The structure of the loyalty program determines whether it actually works. These recommendations are based on what functions in the food and beverage space.
8–10 stamps: the classic
Someone who gets a coffee every day fills the card in two weeks. The program feels achievable — and the customer starts returning more quickly after just a few stamps.
Example: Every 9th coffee free
Free coffee: the simplest reward
Your customer knows the value — no explanation needed. A free coffee has high perceived value at modest real cost. Not a discount on the current purchase; a genuine reward.
Example: Every 10th cappuccino free
Welcome stamp: the fast start
Starting with 2 of 10 rather than 0 of 10 significantly improves completion rates — research on the endowed progress effect confirms this. In Summa you can configure new cards to start with a head-start stamp.
Example: New cards start with 1 stamp
Cake + coffee: two programs in parallel
Want to reward your pastry range too? Summa allows multiple programs at once. Coffee card and cake card run independently — the same customer can participate in both.
Example: Coffee card (10 stamps) + cake card (7 stamps)
What tends not to work: points systems with conversion rates. They create effort and confusion — exactly what you don't want at the counter.
How it works at the counter
At 8 in the morning the queue is out the door. The loyalty program has to be done in two seconds — or it won't get used.
QR scan: instant, no hardware needed
Your staff member opens the Summa scanner — it's a website, not an app. The customer shows their QR code. One tap to issue the stamp. That's it. No hardware, no installation.
NFC tap: even faster
The customer taps their phone against a small NFC puck on the counter. The stamp is issued automatically — without your staff member doing anything. Ideal during peak hours. The NFC stamp is a one-off purchase from €25.
PIN: for customers who don't have their phone out
Some guests don't have their phone to hand. With the PIN code the customer simply says their four-digit number — your staff member types it in, stamp issued.
Training time: zero. All three methods are self-explanatory. New staff can use them after a single test run.
Optional: automatic stamping. With this setting Summa issues the stamp immediately after scanning — no confirmation tap needed. Saves another second.
No credit card needed. See pricing
Already on board
Frequently asked questions
What does a free coffee actually cost me?
For a typical café coffee (raw material cost ~60 cents, selling price ~€3.50), a free coffee after 10 stamps represents an effective discount of around 10%. Set against the gain from increased visit frequency: if every regular comes in 15–20% more often, the calculation is positive.
Can I adjust the program at any time?
Yes — with one caveat. The core rules (stamp count, reward) can't be changed once active cards exist. That protects your guests: they shouldn't have the rules changed mid-game. If you want new terms, just create a new program alongside the existing one.
What happens if a guest changes or loses their phone?
Anyone who saved an email address can recover the card at any time by email — including all their stamps. Anyone who didn't can start fresh, or come to you; you can enter stamps manually.
Do my guests need to download an app?
No. The stamp card opens in the browser — like a website. No download, no account, no password. Anyone who wants to can save the card to Apple Wallet or Google Wallet; then it's always one tap away.
What if my staff refuse to use the system?
That's a legitimate concern. Which is why Summa is built so that stamping takes less time than stamping a paper card. The scanner runs in the browser on their phone — no app, no login. Most staff get comfortable with it within a morning.
Can I see how often my regulars come in?
You see stamps per day, week, and month, active cards, redemptions, and peak hours. You don't see who the guest is — unless they voluntarily provided an email address. No customer profile, no purchase history.
What does Summa cost?
30 days free, then from €9 per month for up to 50 active cards. No setup fee, no annual contract. The price adjusts automatically if you have more cards.
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