Kata did not begin as a business plan. It began as a frustration that Marie Keller lived with for years, and eventually decided to solve properly.
Someone who actually cares about this
Marie has taken her health seriously for a long time: training, real food, actual cooking, the routines that hold a life together. She is not the person who needs to be talked into a morning walk. She is the person who already does the work.
What she never had was one place for it. Every year added another app and another subscription. One for workouts, one for macros, one for sleep, one for supplements, none of them speaking to each other. Her health was real, but it was scattered across a dozen accounts that each knew a sliver of the story and none of which knew her. Using them, she says, felt like living with amnesia: she never quite knew what they collected, where her data lived, or who could see it.
The conversation that kept forgetting
When general AI arrived, Marie did the natural thing. She talked her days through with it: what she trained, what she ate, how she slept, what to cook tonight. She loved it immediately. For the first time, logging felt like talking to someone rather than filling in a database.
But it kept forgetting. It mixed up her days, blurred one topic into another, confused her with the people she had asked it about. A brilliant conversation partner that could not hold on to her story. The thing that made it feel human, the free-flowing chat, was also the thing that made it useless as a memory. Close the window, and it lost you.
That gap is the entire origin of Kata. Not "there should be a smarter chatbot," but "there should be one that remembers, and keeps what it remembers private."
Building the thing she wanted
So Marie built it. Not a tracker with a chat bolted on, and not a chatbot pretending to be a tracker, but a brain that does only one thing: one coach, one memory, one place for the whole day.
She is honest about what Kata is and is not. It does not claim to be the most science-obsessed instrument on earth, and it is not a doctor. It is a real daily companion for people who want a healthier, easier life, and the test it has to pass is simple: does it get used, every single day, with ease? That bar, quiet daily use, is harder to clear than it sounds, and it is the one that matters.
"Every morning I just talk to it: over coffee, while cooking, after training. It feels completely natural, and then the AI does something no notebook ever did: it knows me a little better every single day." · Marie Keller
Engineered like it matters
A coach this personal only works if what carries it is built with real care. The engineering behind Kata is Daniel Weber, who brings more than fifteen years of building software and digital products across very different worlds, from small early teams to large organizations. He was building conversational software long before assistants were everywhere.
That depth is the quiet advantage. Making an AI you can simply talk to is one problem. Making one that holds your history, keeps it on your device, and stays private by design is a much harder one, and it is the one worth solving.
The vision
Kata is Swiss made, operated by BSNS GmbH in Rotkreuz, and built for people who take their health seriously without wanting to run their life from a spreadsheet. The long view is straightforward and, we think, quietly ambitious: the one health companion that remembers you, that gets more valuable the longer you use it, and that never sells the one thing it should never sell, which is you.
Health does not respond to motivation. It responds to repetition. Marie built Kata to make the repetition light enough that you keep going, and personal enough that it feels like yours. That is the founder's whole idea, and everything in the product follows from it.