An AI-native team building an Apple Watch training app that takes the decision-making out of showing up.
A few of us came out of building Youzan, with backgrounds between us in big-data engineering, AI systems, and sport science. Over the last few years we kept running into the same annoyance on our own phones: the watches were collecting good signals, the apps had pretty dashboards, and nobody had really closed the gap between the two and the question that actually matters in the morning — what should I do today.
That's the problem we picked. Most fitness apps post huge downloads, with even bigger churn underneath. The bar to "doing fitness" still gets set strangely high — 5K runs and an hour at the gym before work — when the version of training that actually works for most people is just a session that fits the day, calibrated to where the body actually is. With the watch already on your wrist, the past decade of training research, and AI that can finally hold a real schedule and a real body in the same context, we think the cost of doing the right thing today can come down a lot.
If ten in every hundred people who try training get healthier from it, our bet is on twenty. You bring the consistency. We bring the friction down.
Founder
Co-founder of Youzan (HK: 6051), where he previously served as CTO, Executive Director, and Co-President. Engineer by training, now into his next chapter as a serial founder. Runs long — several 50K+ trail ultras — and is usually the first person breaking in new ideas inside his own training week.
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Co-founder
Led big data and new-retail engineering at Youzan. A decade of hands-on AI and infrastructure work behind him, and the kind of full-stack engineer who'd rather write the tool himself than wait for one. Certified coach, 100K ultra finisher; the data side of Dorsi is his.
LinkedIn
Sport & Health Scientist
Studied sport and health science at Tianjin University of Sport. Did a stretch as a sport-science researcher at a major consumer smart-hardware brand before joining us. Has been lifting since high school, which is why when we have a question about programming or load, he's usually the one with the right answer.
Plus growth and full-stack engineers across our two offices.
Dorsi is operated by EXPOLEAP PTE. LTD., a Singapore-incorporated company founded in August 2025, with an engineering team based in Hangzhou.
When we make a claim about training or recovery, we try to anchor it to peer-reviewed work and name the studies. The literature is messy in places, and where it is, we say so on the page rather than pick the cleanest version of the answer. We'd rather lose a reader than push someone into a session they shouldn't have done.
Dorsi is a wellness companion for healthy adults who already train. It's not a medical device, and it doesn't diagnose, treat, or prescribe anything. If you're dealing with pain, an injury, illness, pregnancy, a cardiac condition, or any other clinical situation, please talk to a qualified healthcare or sports medicine professional first.
Press, partnerships, product feedback: hi@dorsi.fit. Or .