Every pitch traced. Every strike called.

1. The app's 3D ballpark from a phone on a tripod behind the mound, looking in at home plate

   1Set up

   Filming from behind the mound
2. The same view zoomed onto home plate, with the strike zone drawn over it in white

   2Mark the plate

   The zone, drawn over the plate
3. One pitch from the app's sample session, its flight drawn from the hand to the plate

   3Throw

   Sample fastball, 141.0 km/h

• The sample session's sixteen flights fanning out from the mound to the plate, coloured by pitch type

  Velocity

  Worked out along the flight, from the hand to the plate.

• The sample session seen from straight above, each flight curving to the side by its pitch type

  Horizontal break

  From above: how far each type runs to one side.

• A close view by the mound of where the sample session's pitches leave the hand

  Release point

  Where the ball left the hand, and how far in front of the rubber.

• The catcher's view of the sample session's pitches arriving at the strike zone

  At the plate

  Each pitch arriving, in the zone or out of it.

See all eight measuresFlights from the app's sample session.