From an overview to the detail.
The supplied overview brings device status, daily goals and health records into one place. A dedicated sleep view provides a timeline, summaries and daily, weekly or monthly review.
App, Cloud & AI
Hulin develops the software around a connected wearable: iOS and Android apps, device communication, backend services and project-specific AI integration.
Start a ProjectSwipe to inspect the wearable and app references



Supplied wearable and app references; compatibility is defined per product. Original Chinese interfaces are preserved. On-screen values are examples, not performance claims.
Wearable software experience
Real app experience informs the everyday details: connecting a device, presenting information and helping people return to the product.
For a new program, the app, backend responsibilities and integration scope are defined around your wearable.
The supplied overview brings device status, daily goals and health records into one place. A dedicated sleep view provides a timeline, summaries and daily, weekly or monthly review.
Binding, synchronization, settings and firmware updates need clear behavior in the app. Interrupted transfers and unavailable devices are part of the design brief.
The supplied health interfaces are software references. Supported measurements and intended use require product-specific validation.

A session becomes a record
The activity interface connects a starting point with a history of sessions. Its information stays organized around the activity and the time it happened.
One product / coordinated responsibilities
The interface is visible. Device behavior, services and data decisions keep it connected to the product.
Capture and retain the right data. Make connection state, local storage and firmware behavior part of the product definition.
Guide setup, device binding and everyday use. Handle interrupted connections, synchronization and updates with clear user feedback.
Coordinate accounts, device records, storage and APIs. Define access, data lifecycle and operational responsibility early.
Connect selected AI services to a useful product workflow, with explicit data boundaries, user control and a way to review the result.
Architecture, data retention, service access and operational responsibilities are agreed per project.

AI with a defined role
Recording workflows may include transcription, summaries and structured output. Retrieval, RAG and agent workflows can be evaluated when the product needs to work with a wider body of knowledge.
Define the input, data permissions and intended result first, including where the user reviews or corrects the output. Then select the integration.
Depending on the project, integrations may involve OpenAI, Claude, DeepSeek, Qwen or Kimi. Service availability and behavior depend on the selected architecture.
Let’s build what comes next
Tell us what you’re developing and where you need engineering support.
Prepare a short project brief, then open it in your email app to send to Hulin.
Review your brief, then open an email draft. Nothing is sent until you send it from your email app.
The brief is ready to copy or attach as a text file. Use the email link above to open your email app.