Svinga Loss

Svinga Loss turns a slow-motion video of your disc golf throw into motion

trails of your arm, coloured by speed.

• Film your throw in Slo-mo (120 or 240 fps) on your iPhone and pick the clip.

• The app finds the throw, your throwing arm, the throw style (backhand or

forehand) and the moment of release automatically.

• Your arm's path is traced from the start of the throw to the release,

coloured from blue (slow) through cyan and white to magenta at top speed.

• See whether your speed builds into a sharp spike right at the release — the

mark of an efficient throw — or stays flat for too long.

• Snap ratio: how much faster the disc leaves than your hand moves.

• Fine-tune start, release and throw style by hand, step the release one

frame at a time, and choose how the trails look.

• Save the traced video to Photos or share it.

Everything runs on your iPhone. No account, no upload, no tracking.

Tip: film side-on, with the whole thrower in the frame, in good light.