The studio
We build the markers.
Cairnby is a small consumer-AI studio. We make tools that mark the way through the parts of life that are easy to get lost in — starting with your money and your things.
Every useful tool has the same dirty secret: it only works if you feed it.
Budgets work — if you log every purchase. Home inventories work — if you file every receipt. The tools that promise clarity quietly hand you a second job, and the moment you stop doing that job, they stop telling the truth.
AI finally breaks that bargain. Software can read the statement, file the receipt, and keep the record current on its own. Cairnby exists to build those instruments — tools that stay true without being fed. You just know where you stand.
Principles
Clear before clever
If a feature makes you feel smart but leaves you unsure, it’s out. Plain answers come first.
Quietly clever tools
The AI works hard so the surface can stay calm. No dopamine, no streaks, no noise.
Your data is yours
Encrypted, exportable, never sold. We’re a product company, not a data company.
Small on purpose.
Cairnby is an independent studio — a small team that designs, builds, and answers support itself. We’d rather ship two tools that respect you than ten that don’t.
The cairn grows.
A cairn is built one stone at a time. Headroom and Serai are the first two — more markers will join them, each built the same way: calm, precise, on your side.