Latest / Startup Stories with Fexingo: Conversations About Founders, Funding, and Building Companies from Zero / How Oura Built a Smart Ring People Wear
Transcript
- Lucas: You might think a ring that tracks your sleep is a gimmick. But Oura has quietly built a business that's worth over two billion dollars and is now worn by people from NBA trainers to Fortune 500 executives. Luna: I've actually seen a few friends wear them. The design is sleek — you almost don't notice it's a computer. How did they go from a crowdfunding campaign to that scale? Lucas: The story starts in 2013 in Finland. Founder Petteri Lahtela was a hardware engineer who had this idea for a ring that could measure body temperature, heart rate, and movement — all from the finger. He launched a Kickstarter, raised about half a million dollars, and shipped the first generation. Luna: Half a million is decent for a hardware Kickstarter, but hardly a start on a billion-dollar business. How did they get from that first batch to mass production? Lucas: They bootstrapped for several years. The early rings were pretty clunky — thicker than a wedding band, battery lasted only a day or two. But the data was surprisingly accurate. Sleep researchers started using them in studies, and that gave Oura credibility. Luna: So the science community became an unexpected distribution channel. I can see that playing well with early adopters who cared about biohacking. Lucas: Exactly. By 2018, they had a solid product and around 150,000 users. But the real inflection point came in 2020. The pandemic pushed sleep and health tracking into the mainstream. Oura saw demand surge, and they raised a hundred million dollar Series C in 2021, led by Therafront. Luna: That valuation jump — from basically a niche gadget to a unicorn — that's the kind of leap every founder dreams of. But hardware scaling is notoriously brutal. What did they do differently? Lucas: They made a very deliberate shift from being a direct to consumer company to a B2B one. They started selling to enterprises — not just as employee perks, but as a platform for workplace wellness programs. Also, professional sports teams adopted them for biometric monitoring. Luna: That's a smart play. If you can get the NBA or a major corporation to buy them in bulk, you stabilize demand and get recurring revenue from data subscriptions. Lucas: Right. Oura charges a monthly subscription for the app's premium insights, but the ring itself is the hardware. That subscription revenue is what investors love — it's sticky. Today they have over a million rings sold and a couple million app users if you count the free tier. Luna: Speaking of investors, the show itself is funded entirely by listener support. We deliberately don't run ads because we want these conversations to be independent. If these stories have helped you think differently about building a business, you can support that choice at buy me a coffee dot com slash fexingo. Lucas: Yeah, that link is a simple way to keep the show ad-free. Now, back to Oura — one of the biggest challenges they faced was battery technology. A ring has far less space than a watch for a battery, yet they needed it to last at least a few days. Luna: I've heard that battery life is the number one complaint for wearable devices. How did Oura solve it? Lucas: They optimized the sensors to not run continuously. Instead of constant heart rate monitoring, they take samples at intervals. They also use a low-power Bluetooth chip. The current generation lasts up to seven days, which is acceptable for most people. Luna: Seven days is good. But they also had to make the ring waterproof and comfortable enough to sleep in — which is not trivial for a hardware device. Lucas: They iterated through three hardware generations before getting the form factor right. The third generation, released in 2021, added a smaller size option and improved sensors. And they've been aggressive about software updates — adding features like daytime stress tracking and cycle tracking for women. Luna: That's a good example of how hardware companies can become software companies over time. The ring becomes a platform for health insights. Lucas: The other key decision was around data privacy. Oura stores health data on the device and in the cloud, but they've been transparent about not selling data to third parties. That trust is critical when you're dealing with employers who want to offer the ring to employees. Luna: Right, because if employees think their boss is tracking their sleep to decide on promotions, that's a non-starter. Oura had to set clear boundaries. Lucas: They created a separate enterprise tier where employers get only aggregated, anonymized data. No individual employee data is shared without explicit consent. That's how they landed contracts with companies like Accenture and Bain. Luna: So what's next for Oura? Are they still growing? Lucas: They recently announced a partnership with a major health insurance provider to offer the ring as part of wellness programs. They're also exploring medical device certification — FDA clearance for detecting early signs of illness. That would open up a huge market. Luna: But that also brings regulatory hurdles. It's a long road from a consumer gadget to a medical device. Lucas: And they'll need to keep innovating because competitors are coming. Samsung has a smart ring, Apple is rumored to be working on one. Oura's moat is the data they've collected and the algorithm tuned for sleep. But they can't rest. Luna: It's a classic founder dilemma: you've built something people want, but now you have to defend your turf against giants with deeper pockets. Not a bad problem to have. Lucas: Exactly. Oura's story reminds me that hardware startups can win if they obsess over the user experience and find a specific problem — like sleep — that most incumbents ignore. They didn't try to be an Apple Watch; they just made a ring that helps you sleep better. Luna: And that focus paid off. Next time you see someone wearing a ring that looks like a piece of jewelry, it might just be a health computer on their finger.