How HarmonyOS Is Turning Treadmills into Family Entertainment Hubs

The Problem with Home Fitness Equipment

Most home exercise machines share a common fate: they end up collecting dust, or worse, become makeshift clothes racks. The issue isn't that people lack motivation to buy them—it's that the routine becomes dull, and starting requires a mental push. Traditional treadmills, for instance, often turn into a chore, not a joy.

Introducing Linjing Roaming: A New Approach

Linjing Roaming, a startup, set out to solve this by reimagining how we interact with fitness equipment at home. Instead of simply placing a treadmill in front of a TV, they developed a device that integrates with Huawei's smart screens, turning your steps into an intuitive control system. You walk, run, or shift side-to-side to navigate through 4K scenic trails or 3D games like "Myth Adventure," where you dodge obstacles and interact with characters using hand gestures.

Their mission is straightforward: transform "I have to exercise" into "I want to play for a bit." This isn't about pushing users to run faster; it's about making movement natural and engaging.

From Fitness Tool to Family Entertainment

Initially, Linjing Roaming targeted fitness novices and busy professionals who struggle to stick with gym routines. But feedback from events like HDC 2026 revealed a broader appeal. Kids were eager to queue up for game challenges, while older users appreciated the machine's stability and comfort. This insight shifted their product from a personal fitness gadget to a family-oriented entertainment system.

One common question at HDC was, "Isn't this just a treadmill?" The answer lies in the integration: Linjing Roaming combines exercise, content, and interactive display into one cohesive experience. It's not about replicating a treadmill; it's about creating a reason to move.

Why HarmonyOS? The Strategic Choice

Choosing HarmonyOS wasn't a casual decision. The team had evaluated other TV ecosystems and found them fragmented—capabilities varied wildly between brands and models, making it hard to ensure a consistent user experience. HarmonyOS, however, offered a unified approach, connecting phones, smart screens, wearables, and other devices seamlessly.

This choice came with trade-offs. By focusing solely on HarmonyOS, they had to forgo broader market reach initially. But the benefits were clear: the ecosystem's distributed capabilities allowed for seamless integration between the Linjing Roaming device, the smart screen, and other home devices. The team also praised HarmonyOS's developer support, including dedicated communication channels and timely assistance during development.

Overcoming Technical Hurdles

Creating a natural, "follow-the-feet" experience involved significant technical challenges. Early skeletal recognition SDKs on HarmonyOS were 2D, offering limited accuracy compared to the 3D solutions they had on Android. This made gesture and posture recognition trickier, especially in crowded demos where bystanders could confuse the system. Fortunately, HarmonyOS introduced a locking mechanism that binds the recognition to a specific user, improving stability.

Performance was another hurdle. Smart screens have different chipsets than phones, and some older models struggled to render complex 3D models. The team had to compress assets and optimize resources, iterating repeatedly to balance visual quality with performance.

Latency was a critical issue for responsiveness. Initially, Bluetooth connections introduced noticeable delays. Switching to Huawei's NearLink technology reduced latency to nearly imperceptible levels, making the experience feel instant. Even system updates, like the migration from HarmonyOS 5.x to 6.x, required close collaboration to fix issues like black screens, underscoring the need for platform-app cooperation.

User Feedback and Future Directions

User feedback at HDC highlighted two key desires: online multiplayer features and better onboarding. People want to exercise with friends or family, even when apart, and they want clearer guidance on how to start. Linjing Roaming is planning to introduce online connectivity, social features, and improved tutorials, including voice prompts and visual cues.

They also aim to integrate with Huawei Health, allowing for personalized workout recommendations based on user history and preferences. For example, an elderly user might receive a gentle 15-minute forest walk, while a child gets a more energetic game session. This is still in the pipeline, but it points toward a future where the device isn't just a gadget but a hub for family wellness.

Industry Implications: The Rise of Ecosystem-Bound Fitness

Linjing Roaming's strategy offers a compelling case study for the fitness and tech industries. By tying their product to a specific ecosystem, they've gained technical advantages and a consistent user experience, but they've also limited their potential market. This trade-off is becoming more common as companies seek deeper integration with platforms like HarmonyOS, which promise seamless connectivity across devices.

The success of such products will depend on the ecosystem's ability to attract and retain users, as well as the platform's maturity in supporting third-party developers. For now, Linjing Roaming is betting that a deep, integrated experience will win over a broad consumer base, even if it means starting with a narrower niche.

Conclusion

Linjing Roaming isn't just another treadmill—it's a reimagining of home fitness as entertainment. By leveraging HarmonyOS's capabilities, they've created a product that feels less like exercise and more like play. While challenges remain, particularly in scaling and adding online features, their approach highlights a growing trend: the fusion of fitness, technology, and family life. As they continue to evolve, they may well redefine what it means to work out at home.