According to EU-Startups, Polish-American startup Mos Health has raised nearly €920,000, which is about $1.1 million, in a pre-Seed funding round. The round was co-led by investors SMOK Ventures and Movens Capital, with participation from individuals including Tomasz Karwatka. The company, founded by CEO Patrycja Brzozowska, is building an AI Health Partner app that analyzes data from wearables and labs to create personalized health protocols. A key second component is a line of proprietary supplements, manufactured in the U.S., meant to act as the physical “execution layer” for its recommendations. Mos Health is launching using a B2B2C model, targeting U.S. employers to offer its system as a modern employee benefit, and has already signed its first letters of intent with Bay Area tech startups.
The execution gap play
Here’s the thing: the wellness and fitness tech space is absolutely packed. There are a million apps that track your sleep, your steps, your heart rate. They all give you charts and graphs and generic advice like “get more sleep” or “eat more greens.” Mos Health’s bet is that the real problem isn’t the data or the advice—it’s actually doing the thing. They’re calling it the “execution gap.” And their solution is interesting: an app that tells you what to do, plus the physical supplements shipped to you to help you do it. It’s a closed-loop system. The app says you’re deficient in magnesium? Here, take this specific pill we made. It removes the step of you having to go research, find, and buy a quality supplement yourself. That’s the theory, anyway.
The B2B2C gambit
Starting in the U.S. via employers is a smart, if challenging, move. The U.S. corporate benefits market is huge and always looking for the next shiny perk to attract and retain talent, especially in tech. Positioning this as “health-as-a-service” for companies makes the sales cycle potentially easier than convincing millions of individuals to subscribe. But it’s a double-edged sword. You’re now selling to HR departments and benefits managers, which is its own world of long cycles and budget approvals. And you’re betting that employees will actually engage with it. How many company-provided wellness programs do we sign up for and then completely ignore? The success will hinge on making it genuinely useful and sticky for the end-user, not just a checkbox for the HR brochure.
Founder and investor signals
The founder background is probably a big reason this got funded so quickly. Patrycja Brzozowska was COO and a founding team member at Wellbee, a mental health platform that just got acquired in 2024. That’s a recent exit in the same broad “health tech” space in Poland. Investor Borys Musielak from SMOK Ventures basically said it: serial entrepreneurs with a local exit aiming for a global win is their exact template. It de-risks the bet somewhat. Bringing on advisors from OpenAI and the Bryan Johnson Blueprint protocol is also a clear signal. It’s an attempt to add serious tech and clinical credibility to what could otherwise be dismissed as just another wellness subscription box.
The big question
So, can this work? The model makes logical sense. Combine software guidance with a physical product, and sell it through a channel with built-in payment (employers). But the competition is fierce. You’ve got everything from Mos Health to traditional wellness apps, telehealth services that prescribe supplements, and direct-to-consumer supplement brands with their own apps. The real test will be proving that their specific combination of AI protocol + matched supplement actually produces better, measurable health outcomes than a piecemeal approach. And that it’s worth a company paying for it. I’m skeptical of any AI health “partner,” but the focus on removing friction is the right one. Now we see if people actually use it.
