Reward for the rest of us
How it works
1
Tap
At checkout, the shop taps its stamp on the customer’s phone.
The stamp is a wooden stamp with an NFC chip inside. One tap adds one stamp to the customer’s card for that shop. No paper card, no app to install, nothing to type at the counter.
2
Collect
Stamps add up on the phone, shop by shop.
Every tap shows the current card right away. Each shop has its own card, so one phone can collect at many shops. Signing in with Google or an email link keeps the cards in one place, under My Stamps.
3
Reward
A full card turns into a reward, automatically.
When the last stamp lands, the reward is issued on the spot and waits under My Stamps. On the next visit the customer presses Redeem, the shop approves it at the counter, and a fresh card begins.
Shops set up in minutes and the stamp ships to the door. Customers never download anything.
How ohmystamp Came to Be
"A Stamp Built by a Shop Owner Who Was Thinking of Closing"
Woohyee Cho has run a dry cleaner in Burlington, Canada for 25 years. Now he is releasing ohmystamp, a digital stamp service. It did not start as a grand business plan. It was born out of the urgency of trying to save a shop on the brink of closing.
"Up until April 2025, I was seriously thinking about closing the shop." Cho says it plainly. The dry cleaner had been running for 25 years, but things were not easy. Then, at the end of that April, something unexpected happened. Nearby dry cleaners closed first, and new customers began flowing into his shop.
"How could I get those customers to come back, and become regulars?" The answer he landed on was stamps. "Whatever it is, you have to let customers know about an event — but the ways to do that were so limited that I could only ever reach the customers already standing in the shop." From the start, he decided to go digital. "No burden of managing paper cards for the owner, and customers can collect and use stamps easily."
He began preparing in May 2025 and launched the service in his own shop on October 1 of that year. The response exceeded expectations from day one. "Seeing people surprised, impressed, happy, having fun — it was good to see. Naturally, conversations with customers got longer and covered more ground."
A year in, the numbers backed it up: new customers who joined at their first checkout came back at roughly twice the rate of those who didn't. See the full data →
There were moments that stuck. "One customer I'd known for a very long time — I saw them smile for the first time. With another, I thought, 'I've never seen that person talk this much.' After a month or two, customers were holding out their phones after paying without being asked. That was satisfying to see."
At the root of this conviction is the fact that he himself is a corner-shop owner. "What always frustrated me was how few ways there were to actually do any marketing." He recalls a memory he cannot forget. Once, roadwork on the main street in front of the shop went on for about eight months, and all he could do was watch sales drop. "I wanted to run a promotion, but that means advertising — and even putting an ad in the local paper or handing out flyers cost more than I could bear." So he built stamp collection around an NFC tap. "The owner doesn't need to spend money on any equipment. The customer doesn't need to install an app, doesn't need Apple Wallet or Google Wallet — just their own phone."
The move to SaaS began with a word from customers. "Before immigrating, I worked in IT in Korea for over twenty years, so I had plenty of development experience. But honestly, I didn't know much about the latest technology — I didn't even know the term SaaS." A few customers said they would like to use it in their own businesses, and from there he started looking into it seriously and pushed ahead.
Just a good tool, and the hope it quietly reaches the people who need it. That is where ohmystamp started, and that is all there is to it.