Support

Badminton Speed Meter Support

For support, privacy questions, data deletion requests, or bug reports, email zhiwudawang@outlook.com.

How to use the app

  1. Choose a badminton training video from your device.
  2. Upload the video for private analysis.
  3. Select the frame where the racket contacts the shuttle.
  4. Mark the shuttle position as accurately as possible.
  5. Review the estimated shuttle speed in km/h.

Common troubleshooting

  • Use a clear video where the shuttle and racket are visible near impact.
  • Avoid clips with heavy blur, extreme camera shake, or the shuttle hidden behind a player.
  • If the estimate looks wrong, reselect the impact frame and mark the shuttle position again.
  • Make sure the app has the iOS photo or camera permission needed for the action you are trying to take.

Upload or analysis failure

  • Check your internet connection and try again.
  • Try a shorter or smaller training clip if the upload repeatedly fails.
  • Close and reopen the app if the upload appears stuck.
  • If the issue continues, contact support with your device model, iOS version, app version, and a short description of what happened.

Delete uploaded videos from History

  1. Open the History screen in Badminton Speed Meter.
  2. Select the uploaded video or history item you want to remove.
  3. Use the delete option and confirm deletion.
  4. If you cannot delete an item in the app, email support and request deletion.