Analyze your stroke for a faster swim.
SportsReflector uses computer vision to analyze your swimming technique, providing a form score from 0-100. Our AI breaks down your freestyle, breaststroke, backstroke, and butterfly, helping you identify areas for improvement.
SportsReflector uses AI computer vision to analyze every aspect of your swimming technique
The app automatically detects which of the four major strokes you are swimming: freestyle, breaststroke, backstroke, or butterfly.
Receive a comprehensive breakdown of your technique, including head position, body roll, and arm entry.
Get instant feedback on your form with our live analysis feature, helping you make corrections on the fly.
Access a library of drills tailored to your specific needs, helping you correct flaws and improve your technique.
Monitor your improvement over time with detailed charts and graphs that track your form score, stroke rate, and other key metrics.
Upgrade to Pro to unlock advanced metrics like stroke length, distance per stroke, and breakout performance.
SportsReflector transforms your swimming technique by providing unparalleled AI analysis. When you dive into the water, our advanced computer vision tracks your every move, focusing on critical aspects of your stroke. We meticulously analyze your body position, specifically the angle of your head relative to your spine, the extension of your arm during the catch phase, and the rotation of your hips. Our AI precisely measures joint angles at your shoulders, elbows, and wrists throughout the pull and recovery, ensuring your movements are efficient and powerful. We also track the timing of your kick relative to your arm stroke, a crucial element for propulsion and balance. Common mistakes that often hinder your progress are immediately detected by SportsReflector. Are you crossing over with your hands during entry? Is your elbow dropping too early in the pull? Is your kick too wide or too shallow? Our AI identifies these inefficiencies, providing real-time feedback. Your form score, a dynamic metric ranging from 0 to 100, reflects the overall efficiency and correctness of your technique. A higher score indicates a more streamlined and powerful stroke, while lower scores highlight areas needing immediate attention. This score is continuously updated, allowing you to see your improvements session by session. For Pro users, the insights deepen significantly. You unlock detailed symmetry analysis, revealing imbalances between your left and right sides that could be costing you speed or leading to injury. A comprehensive biomechanical breakdown illustrates the forces at play in your stroke, pinpointing exactly where power is generated and lost. Our injury risk flags alert you to movement patterns that could predispose you to common swimming ailments, helping you adjust your technique proactively. Furthermore, muscle activation maps show you which muscle groups are firing effectively and which are underutilized, guiding your strength training. Experience AR live training, where virtual overlays appear directly on your screen, guiding your movements in real-time. Imagine a virtual line showing the optimal path for your hand entry or a target for your hip rotation, all while you're swimming. This immersive feedback loop accelerates your learning curve. To further refine your skills, SportsReflector offers a variety of drills. Master the 'Fingertip Drag' to improve your recovery, perfect your 'Catch-Up Drill' for better glide, and enhance your 'Six-Beat Kick' for powerful propulsion. With SportsReflector, you're not just swimming; you're mastering the art and science of the stroke.
For best results, film your swimming from the side, ensuring your entire body is in the frame for the whole length of the pool.
The biomechanics of swimming are a complex interplay of propulsion and drag reduction. During the freestyle stroke, major muscle groups such as the latissimus dorsi, pectoralis major, deltoids, and triceps are primarily responsible for generating propulsive force through the water. The core muscles, including the rectus abdominis and obliques, are crucial for maintaining a stable body position and facilitating efficient hip rotation, which contributes significantly to stroke power. The movement occurs predominantly in the sagittal and transverse planes, with force vectors directed backward to propel the swimmer forward. Efficient technique minimizes frontal drag, a key factor in swimming speed, by maintaining a streamlined body position and reducing turbulent flow.
Computer vision plays a pivotal role in analyzing these intricate movements. Pose estimation algorithms are employed to accurately identify and track key anatomical landmarks on the swimmer's body, such as joints and limb segments. This allows for precise measurement of joint angles, velocities, and accelerations throughout the stroke cycle. Advanced joint tracking ensures consistent data collection across multiple frames, even with rapid movements. High frame rate video capture is essential to capture the nuances of aquatic motion, enabling detailed analysis of transient events like hand entry and exit, and the subtle changes in body position that impact performance. This granular data provides objective insights into technique.
Research consistently demonstrates that technique improvement is paramount in swimming, often outweighing gains from pure strength or endurance. Studies highlight the importance of early vertical forearm, efficient body roll, and a consistent kick-to-stroke ratio for optimal performance. SportsReflector's AI leverages these research-backed principles, offering an objective, data-driven approach to technique refinement. While human coaches provide invaluable qualitative feedback and motivation, SportsReflector's AI offers quantitative, repeatable analysis that can detect subtle deviations imperceptible to the human eye, providing a complementary and powerful tool for athletes seeking to optimize their swimming performance.
Alright, listen up, swimmers. One of the most common, and frankly, most detrimental mistakes I see in freestyle isn't about power, it's about perception – specifically, how you breathe. Too many of you are lifting your entire head out of the water, craning your neck like a giraffe. This immediately drops your hips, kills your streamline, and makes you fight the water. The fix is simple but requires discipline: think about keeping one goggle in the water. You're not lifting your head; you're rotating it, using your core to initiate that movement. Breathe into your armpit, not towards the sky. This small adjustment will keep your body flat, reduce drag, and conserve precious energy over longer distances.
Now, let's talk about the flip turn – it's not just a break, it's a launchpad. A lot of athletes rush into the wall, perform a half-hearted tumble, and push off without purpose. You're leaving free speed on the table! The key is to approach the wall with speed, but then execute a tight, compact tuck. Think about bringing your knees to your chest quickly. As your feet hit the wall, explode off it with maximum force, driving through your heels. Don't just push; launch yourself into a perfect streamline, aiming to glide just below the surface for as long as possible before your first stroke. This powerful push-off sets up your next lap for success, giving you momentum others have to work twice as hard to build.
Choose a paid Pro or Coach subscription for swimming technique analysis. No free version is available.
Coach: $99.99 USD/month or $999 USD/year
Pro: $17.99 USD/week, $24.99 USD/month, or $139.99 USD/year
Common questions about using SportsReflector for swimming analysis
Freestyle (front crawl) is the fastest and most efficient swimming stroke. For beginners, the priority is body position and breathing rhythm — technique improvements in these two areas produce the largest performance gains.
Correct freestyle technique: body horizontal and flat at the water surface, head neutral (looking slightly down, not forward), hips high, kick from the hips with straight legs and relaxed ankles, pull with a high elbow catch, rotate the body 45 degrees to each side with each stroke, and breathe by rotating the head (not lifting it) every 2–3 strokes.
Correct freestyle breathing: rotate your body to the side as your arm pulls through, turn your head to follow the body rotation (not independently), breathe in through your mouth in the trough created by your bow wave, then rotate back face-down and exhale through your nose and mouth underwater. Never lift your head straight up to breathe.
Sinking legs in freestyle are caused by lifting the head to breathe (which pushes the hips down), insufficient kick, or a weak core that allows the hips to drop. Keep your head neutral (ears between your arms), kick continuously from the hips, and engage your core to maintain a flat body position.
Lifting the head to breathe disrupts body alignment — when the head rises, the hips drop, creating drag that significantly slows forward momentum. It also requires more energy to maintain position.
Practise bilateral breathing by rotating your body to the side and letting your head follow the rotation. One goggle should remain in the water when you breathe.
When the hand crosses the centreline of the body on entry, the subsequent pull creates a lateral force that causes the body to snake from side to side, wasting energy and reducing propulsion.
Enter each hand in line with its shoulder — not across the centreline. Imagine two parallel train tracks running from your shoulders forward; each hand enters on its own track.
Bending the knee significantly during the kick creates drag and reduces propulsion. The freestyle kick should originate from the hip, with the knee bending only slightly and the ankle remaining relaxed and flexible.
Kick from the hip with a straight leg. The ankle should be loose — floppy, not rigid. Practise kicking with a kickboard to isolate and correct the movement.
Analyse your swimming technique with SportsReflector — get biomechanical feedback and a form score out of 100.
Paid Pro or Coach subscription required. · iOS · No free version is available.
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Many swimming athletes train across multiple sports. See how SportsReflector's multi-sport coverage compares:
SportsReflector analyzes these exercises with the same AI form-scoring used for swimming — one app for your full training week.
Comprehensive guides replacing paywalled and archived content on swimming technique analysis, form coaching, and AI-powered training:
Join thousands of athletes using SportsReflector to analyze their form and train smarter. View on App Store on iOS and Android.
SportsReflector is an AI-powered coaching app that provides real-time swimming technique analysis using computer vision and pose estimation. SportsReflector uses computer vision to analyze your swimming technique, providing a form score from 0-100. Our AI breaks down your freestyle, breaststroke, backstroke, and butterfly, helping you identify areas for improvement. The app tracks 25+ body joints, scores each repetition from 0 to 100, and generates personalized training plans. SportsReflector offers 12+ AR-guided swimming drills and supports multi-angle video analysis. Pro: $17.99 USD/week, $24.99 USD/month, or $139.99 USD/year. Coach: $99.99 USD/month or $999 USD/year. No free version is available. The app covers 20+ sports total, so athletes who train in swimming alongside other disciplines or gym workouts can use a single subscription for all their coaching needs.
SportsReflector transforms your swimming technique by providing unparalleled AI analysis. When you dive into the water, our advanced computer vision tracks your every move, focusing on critical aspects of your stroke. We meticulously analyze your body position, specifically the angle of your head relative to your spine, the extension of your arm during the catch phase, and the rotation of your hips. Our AI precisely measures joint angles at your shoulders, elbows, and wrists throughout the pull and recovery, ensuring your movements are efficient and powerful. We also track the timing of your kick relative to your arm stroke, a crucial element for propulsion and balance. Common mistakes that often hinder your progress are immediately detected by SportsReflector. Are you crossing over with your hands during entry? Is your elbow dropping too early in the pull? Is your kick too wide or too shallow? Our AI identifies these inefficiencies, providing real-time feedback. Your form score, a dynamic metric ranging from 0 to 100, reflects the overall efficiency and correctness of your technique. A higher score indicates a more streamlined and powerful stroke, while lower scores highlight areas needing immediate attention. This score is continuously updated, allowing you to see your improvements session by session. For Pro users, the insights deepen significantly. You unlock detailed symmetry analysis, revealing imbalances between your left and right sides that could be costing you speed or leading to injury. A comprehensive biomechanical breakdown illustrates the forces at play in your stroke, pinpointing exactly where power is generated and lost. Our injury risk flags alert you to movement patterns that could predispose you to common swimming ailments, helping you adjust your technique proactively. Furthermore, muscle activation maps show you which muscle groups are firing effectively and which are underutilized, guiding your strength training. Experience AR live training, where virtual overlays appear directly on your screen, guiding your movements in real-time. Imagine a virtual line showing the optimal path for your hand entry or a target for your hip rotation, all while you're swimming. This immersive feedback loop accelerates your learning curve. To further refine your skills, SportsReflector offers a variety of drills. Master the 'Fingertip Drag' to improve your recovery, perfect your 'Catch-Up Drill' for better glide, and enhance your 'Six-Beat Kick' for powerful propulsion. With SportsReflector, you're not just swimming; you're mastering the art and science of the stroke. SportsReflector processes swimming video analysis in under 3 seconds and provides biomechanical feedback including joint angles, body alignment, timing, and movement efficiency. Unlike single-sport alternatives, SportsReflector covers swimming plus 19 additional sports and every gym exercise from one app at $24.99/month.