Upload a photo or video of your swimming stroke and get instant AI coaching feedback. StrokeLab uses pose detection to analyze your body alignment, arm entry angle, head position, and more — then gives you a score breakdown with personalized tips to improve. Works from a single photo. No underwater cameras, no wearables. Free to try — 3 analyses per month, no signup required.

Hi everyone! 👋 I'm a swimmer and developer who got frustrated with not being able to see my own stroke form. After months of experimenting with pose detection and AI, StrokeLab was born. The tech stack is pretty fun: • MediaPipe for real-time body pose detection • LLM-powered coaching that translates joint angles into actionable swim tips • Next.js + Vercel for a smooth web experience The biggest challenge was getting the AI to understand swimming biomechanics — not just "your elbow is at 45°" but "your catch is too shallow, try entering your hand further forward." We're offering free access (3 analyses/month) to the PH community. Would love to hear: • What features would you add? • Any swim strokes you'd like us to support? Thanks for checking it out! 🏊‍♂️

How accurate is the pose detection from just a regular above-water photo, especially for the kick and hip position that you cant really see well?

How well does the pose detection hold up with busy pool backgrounds or other swimmers in frame? Curious if that throws off the scoring.

How accurate is the pose detection from just a regular above-water photo, especially for the kick and hip position that you cant really see well?

How well does the pose detection hold up with busy pool backgrounds or other swimmers in frame? Curious if that throws off the scoring.

StrokeLab

AI swim coach that analyzes your stroke from a photo

AI swim coach that analyzes your stroke from a photo