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About

About Treubar: give guests a reason to return.

We’re Bonyad and Dennis. We’ve worked behind the counter, and now we’re building the digital stamp card we wish we’d had. Made in Hamburg to help your next customer become a regular.

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Built in Hamburg
The people behind Treubar

From serving guests to building Treubar.

We’re Bonyad Nouri and Dennis Achtziger. We both worked in hospitality and service before becoming AI engineers with a background in mathematics. Today we develop Treubar ourselves in Hamburg, combining experience behind the counter with the skills to build simple digital tools. Treubar is entirely self-funded. We make our own decisions and shape the product with the first businesses using it.

Read how we went from the counter to building our own app in our founding story.

Black-and-white portrait of Dennis Achtziger and Bonyad Nouri, the founders of Treubar
Dennis Achtziger & Bonyad Nouri · Founders
Why Treubar exists

A great visit deserves another.

Your café, bakery or salon thrives on people coming back. Treubar lets you reward them on their phones: their stamp card lives in Apple Wallet or Google Wallet, rather than on a paper card left at home. You can set it up in minutes, and your guests need no extra app. Loyalty that fits into your working day.

What you can use today

Built around your business.

Where Treubar is today.

Give guests a reason to come back.

Set up your digital stamp card in minutes. Start for free and bring Treubar to your counter.

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