Treubar started with a problem we knew from working behind the counter: a regular customer arrives, but their stamp card is at home. We are Bonyad Nouri and Dennis Achtziger, building a digital stamp card that makes collecting easier for guests and rewarding loyalty simpler for small businesses.
The Treubar founders: from hospitality to software
Before programming, we both worked in hospitality and service. We know the busy Saturday shift and the regular whose coffee is already being made before they order. We also know the search for a paper card while a queue builds behind them.
We went on to study mathematics and now work as AI engineers. Treubar brings those experiences together: building software and understanding the daily routine it needs to fit.
Why we put the stamp card in the wallet
A stamp card has a strength we wanted to keep: the idea is easy to understand. After a set number of visits, the customer earns a specific reward. A small shop does not need complicated points tiers for that.
With Treubar, the card lives in Apple Wallet or Google Wallet. Guests scan the QR code, enter their first name, last name and date of birth once, then add the card. They need no extra app, Treubar account or email address.
Your team issues stamps by scanning with a phone. You set up the card in the Treubar app for iOS or Android, or in the browser. The logo, colours and reward are yours. The technology should make service easier and leave you time for your customers.
Self-funded and built in Hamburg
Treubar is entirely self-funded. We have no investors and decide for ourselves which problems to tackle next.
We judge the product by the needs of a small business. Can someone set up a card quickly? Can a new team member explain the process? Does a guest immediately understand the reward? Those questions guide our work.
We develop in Germany and host on EU servers. Treubar does not sell guest data or use it to build advertising profiles of its own. Find more about us and our approach on the about page.
What the first businesses help us shape
During the pilot phase, we are improving Treubar with the first Hamburg businesses using it at their counters. Those conversations show us which steps work during service and where we need to make improvements.
You can already use Treubar. Our focus is a digital stamp card that small businesses can introduce quickly. Ideas for points systems and possible till integrations are in planning; they are not available features yet.
If you would like to work on products like this, visit our careers page.
Frequently asked questions
Who runs Treubar?
Treubar is operated by Printproof UG (haftungsbeschränkt) in Hamburg. The founders behind the product are Bonyad Nouri and Dennis Achtziger.
Do my guests need the Treubar app?
No. The Treubar app is for your business. Guests enter their name and date of birth once, then save their card in Apple Wallet or Google Wallet.
Can a small business start free?
Yes. Free includes one stamp card, one location and up to 20 customer passes. You need no credit card and can set up your card in minutes.
Try Treubar at your own counter
Design your card, choose a reward and invite your first customers. Start free or compare plans.