Privacy Policy
Last updated: June 3, 2026
Whip Power Trainer ("the app") is a badminton whip-snap training tool. We designed it to work entirely on your device. This policy explains what the app does and does not do with your information.
Information we collect
None that leaves your device. The app has no account, no login, and no server. We do not collect, transmit, or sell any personal information.
Device sensors
To simulate the training stick and rate your swings, the app reads your device's motion sensors (accelerometer and gyroscope) while a training session is running. These readings are processed in real time on your device and are never uploaded or stored off-device.
Data stored on your device
Your weight settings, language and voice preferences, and the current session's swing history are saved locally on your device only. This data is removed when you delete the app. It is never sent anywhere.
Microphone and camera
The app does not use the microphone or camera. Voice feedback uses your device's built-in text-to-speech to speak a rating; nothing is recorded.
Third parties and tracking
The app contains no analytics, no advertising SDKs, and no third-party trackers. Links to the App Store or to email open in the respective system apps at your request.
Children
The app is suitable for all ages and collects no personal information from anyone, including children.
Changes
If this policy changes, the updated version will be posted on this page with a new date.
Contact
Questions? Email zachsong@gmail.com.