Dodo Cleaners: One Year of Data
A year in, we looked at the numbers — matching the stamp service's records against twelve years of transaction history in the shop's POS, customer by customer.
Actual screenshot — the shop's live dashboard
One Year of Stamps (Oct 1, 2025 – Oct 11, 2026)
| Registered customers | 418 |
|---|---|
| Stamps collected | 903 |
| Coupons issued | 63 |
| Coupons redeemed | 20 |
| SMS opt-in | All but 1 registered customer |
| New customers who joined at first checkout | 36% (99 of 276) |
Return Rate of New Customers (matched against POS records, as of Sept 22, 2026)
| Returned within 180 days | |
|---|---|
| Joined the stamp at first checkout | 35.4% (17 of 48) |
| Did not join | 18.4% (16 of 87) |
| New customers before the stamp program (reference) | 29.6% (of 433) |
The result was clear. New customers who joined at their first checkout came back within 180 days at roughly twice the rate of those who did not. These were customers who first walked in during the same period, lived through the same downturn — the only difference was whether they tapped a stamp on day one. More striking still, the return rate for customers who joined was higher than that of new customers before the program existed. From early 2026 the economy worsened sharply and the shop's overall sales fell, yet the customers who had joined the stamp program kept coming back.
Numbers are not everything. The samples are in the dozens, and this is the record of a single dry cleaner. But on the original goal — turning first-time customers into regulars — this shop's data says yes.