A stamp card gives a customer one stamp per visit and a reward when the agreed number is reached. The digital version lives in the phone wallet instead of a pocket, so it is never lost or forgotten, and it can tell its owner they are close to the goal — something a paper punch card can never do.
Why did the punch card work in the first place?
Because the mind wants to finish what it started. Empty squares in front of you produce a pull that no discount percentage produces, and the closer the row gets to full, the stronger the pull. That is the whole secret of a stamp card, and it is psychological rather than financial — which is why it works even when the reward is modest.
The digital card keeps that secret intact and adds one thing: it knows when a customer is close, and it can tell them. "One stamp to go" arrives exactly when the pull is at its strongest.
How many stamps? The simple equation
Time to reward = stamp count ÷ visits per month. Keep the result between three and six weeks. Below that the reward loses its value; above it the customer loses interest.
| Trade | Typical monthly visits | Suggested count |
|---|---|---|
| Cafe | 8 | 6 stamps |
| Bakery | 10 | 8 stamps |
| Restaurant | 2 | 4 stamps |
| Barber | 1.5 | 3 stamps |
| Car wash | 2 | 4 stamps |
| Beauty salon | 1 | 3 stamps |
Paper punch card versus digital stamp card
| Paper card | Digital stamp card | |
|---|---|---|
| Gets lost | Often — and the customer leaves unnoticed | No, because they are not carrying it |
| Reminds the customer | No | Yes, on the lock screen |
| Cost per hundred cards | Reprinting, forever | Nothing after issue |
| Tells you the active count | No | Yes, with last visit dates |
| Can be forged | A similar rubber stamp | No, stamps come from your account |
| Redesign | A full reprint | An edit that propagates automatically |
Frequently asked questions
Can I give more than one stamp per visit?
You can, and it is a useful lever on occasions: a double stamp on opening day or on a quiet weekday. Keep it an announced exception rather than a rule, or the stamp loses its meaning.
What happens after the customer redeems?
The same card starts a fresh cycle from zero, so nobody needs to add another card. The cycle counter tells you who your genuinely loyal customers are.
Are stamps always better than points?
No. Stamps win when bills are similar and frequency is high. If one customer spends ten times another in a single visit, points are fairer.