Spyn

Spyn is your AI posture coach it runs on any laptop or phone, giving real-time feedback to prevent pain, boost performance, and keep you moving strong.

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Inspiration

After hours of hacking, we noticed a common theme: everyone was slouching. Studies show that 80% of adults experience back or neck pain from posture issues, yet most solutions require wearables or apps that nag without intelligence. We wanted something smarter, accessible, and instantly impactful.

What it does

Spyn is an AI-powered posture and exercise coach that runs directly on your laptop or phone — no hardware needed.

  • Everyday Mode: Detects slouching while you work and provides gentle reminders.
  • Exercise Mode: Recognizes exercises like squats or push-ups and gives real-time coaching.
  • Live Skeleton Overlay: Lets users see posture feedback clearly and interactively.

How we built it

  • Computer Vision: Google Mediapipe + MoveNet to track 33 body keypoints.
  • Smart Angles: Calculated body angles to detect slouching or incorrect form. Example:
    theta = cos^-1 frac vec{AB} \cdot \vec{BC}}{||AB|| \cdot ||BC||}
  • Feedback System: Visual overlays and audio cues via text-to-speech.
  • Tech Stack: Python, OpenCV, Mediapipe/MoveNet, React for UI.

Challenges we ran into

  • Ensuring real-time performance across devices.
  • Designing corrections that feel supportive, not annoying.
  • Handling diverse body types and camera setups.
  • Cross-platform testing between laptops and phones.

Accomplishments

  • Built a working AI posture coach in under 36 hours.
  • Real-time detection with smooth overlays and audio feedback.
  • Demo impact was instant everyone slouched, everyone corrected.

What we learned

  • The importance of ergonomics and user experience in wellness tech.
  • How to optimize pose estimation models for both speed and accuracy.
  • That health-focused projects can have immediate, visible impact.

What’s next

  • Personalized coaching that learns user posture patterns.
  • Expanding exercise library (yoga, weightlifting, sports).
  • Mobile app with AR overlays.
  • Integration with wearables and health platforms.

With Spyn, we turn everyday devices into posture coaches helping people sit straighter, move better, and live healthier.

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