鞭甩发力器
Feel the whip. Train the snap.
A digital twin of the badminton whip-snap power stick. Strap your phone to your forearm, swing, and the app simulates a sliding weight cracking the end-cap — exactly when your snap is right.
Download on the App StoreiPhone · Free
What it does
🏸
Physics digital twin
A real physics engine simulates the sliding weight inside the stick — it cracks only on a true whip-then-brake.
🔊
Instant snap sound
A crisp "click" fires the instant your deceleration is sharp enough — immediate feedback on every swing.
🎚️
Adjustable weight
Light / Medium / Heavy presets, plus mass, tube length, friction and more — tune the difficulty and feel.
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Score & curve
Each swing is rated with impact speed, peak angular velocity, time-to-peak and a load→brake→impact curve.
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Voice feedback
Hear your rating spoken after every swing, so you can keep your eyes off the screen.
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Auto-calibrated
The swing axis is detected automatically from your motion — no setup, just strap on and swing.
How to use
1
Strap onFasten your phone to your forearm or wrist with an armband.
2
Start & swingTap Start and perform badminton whip swings — accelerate, then brake sharply.
3
Chase the snapListen for the crack and watch your score. Heavier presets demand a sharper whip.
Your data stays on your phone
No account, no tracking. Sensor readings are processed on-device in real time and never leave your phone.