Strokes per minute calculates the pace of your stroke using three full strokes to account for different stroke rates. To start calculating simply tap anywhere on the screen, once the athlete has taken the number of strokes, tap again. The is no right spot that the rating must be should be measured from. Typically it is easiest measuring from the catch of the stroke to just before the catch/ the end of the recovery or slide of the final stroke. This approach and the extended period of three strokes ensures efficient calculation across both lower stroke rates during training rows and faster stroke rates during a race. On iPhone & iPad the app will then display both the stroke rate and the time taken per stroke. Due to the small size of the Watch screen only the stroke rate is shown.