Your wrist is your
starter pistol.
WatchOS-first sprint training with 100Hz motion capture, real-time biomechanics, and performance insights to analyze every sprint.
Apple Watch iPhone HealthKit Live Activities
WatchOS-first sprint training with 100Hz motion capture, real-time biomechanics, and performance insights to analyze every sprint.
Everything a sprinter needs — engineered into a single tap on your wrist.
Randomized 10-12 second countdown mirrors official track meet protocols. Measures reaction time with sub-10ms precision. False start detection at the physiological 100ms threshold.
Dual-pipeline accelerometer and gyroscope capture at 100 samples per second. Kalman filter fuses IMU with GPS Doppler speed for drift-free velocity.
Arm drive efficiency, stride length, cadence, ROM decay, and ground contact time — all computed in real-time on your wrist.
No phone required on the track. All recording and processing happens on Watch. Data syncs automatically when your iPhone is nearby.
For sprints 60m and above, GPS cross-checks your distance with Apple's Track Detection. Curve-aware corrections handle 200m+ track geometry.
Three-level insight engine analyzes each sprint, session, and your overall training load. Recovery monitoring via HRV and resting heart rate.
One tap starts the sequence. Everything else is automatic.
Select from 40m to 800m. Adjust block and tension settings for your race prep.
The visual countdown guides you through your start sequence. A random delay between 3.5-5.5 seconds prevents anticipation — just like a real meet.
100Hz sensors capture every stride. Auto-stop detects when you finish and trims the data. A 3-phase piecewise fit finds the exact deceleration point.
Split times, G-force peaks, arm drive curves, velocity profiles, and stride analysis — all available instantly on your Watch and synced to iPhone for deeper review.
Every sprint produces a complete biomechanical profile.
Measured from the GO signal to your first step. Sub-200ms? Elite territory.
Maximum acceleration magnitude during your drive phase. Above 4.0G is elite-level power.
How much of your arm energy goes forward vs. lateral. Above 90% = optimal efficiency.
Steps per minute calculated from gyroscope peak detection. Matches video analysis within 1-2 steps.
Distance per step derived from total distance and step count. Track your stride development over time.
How much your arm range of motion drops from start to finish. Under 10% means you held form.
Seamless sync via WatchConnectivity. Live Activities on your lock screen. Full workout history in Apple Fitness.
Sprint count, elapsed time, and last sprint summary — right on your lock screen and Dynamic Island.
Every session saves as an HKWorkout with segments. Calories, distance, and heart rate sync to Apple Fitness.
Curve data and session history backed up to iCloud Drive. Recovers automatically on new devices.
Falcata Run is in beta. Join TestFlight to try it now.
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