overnoverVBT

vbt

BarbellVBT measures real-time barbell velocity (m/s) using your Apple Watch accelerometer — bringing professional Velocity-Based Training (VBT) to everyone.

No expensive dedicated devices needed. Just your Apple Watch.

【Scientifically Validated】

A 2023 study by the Swiss Federal Institute of Sport (SFISM) and ETH Zurich confirmed that the wrist-worn Apple Watch achieves barbell velocity measurement accuracy (r = 0.952–0.965) equivalent to professional VBT devices. (Achermann et al., Sports 2023, DOI: 10.3390/sports11070125)

【Key Features】 Real-Time Barbell Velocity Measures vertical barbell velocity in real-time using Apple Watch sensors. Displayed simultaneously on iPhone speedometer.

8 Exercise Modes Squat, Bench Press, Deadlift, Overhead Press, Snatch, Clean, Kettlebell, and Custom mode.

Automatic Velocity Zone Classification Automatically displays Power, Dynamic, SPD-STR, Strength, and Max Strength zones based on measured velocity.

Athlete History Management Manage training data for multiple athletes individually. Records peak velocity, rep count, and velocity loss per set.

Ready Alert System Detects stillness and notifies you when measurement is ready via haptic feedback.

Velocity Loss Monitoring Calculates real-time velocity loss compared to the first rep in a set, providing an objective measure of fatigue.

【Supported Devices】 iPhone (iOS 16 or later) Apple Watch Series 4 or later (watchOS 9 or later)

【What is VBT?】 Velocity-Based Training is a scientific training method that adjusts training intensity based on barbell movement speed. A method used by elite athletes — now accessible to everyone.

【Update Roadmap】

v1.0 (Current) Real-time Apple Watch velocity measurement 8 exercise modes Athlete history management Coach mode

v1.1 (Next Quarter) Apple Watch Standalone Mode — Record workouts with Watch only, no iPhone needed — Auto-sync when iPhone is connected

v1.1 Training Game Mode — Gamified training to hit target velocity zones — Speed challenges and performance rankings

v1.2+ (User Feedback Updates) Load-Velocity Profile Automatic 1RM prediction Session trend graphs

Price increases with each update. Now is the best time to start at the lowest price.