This application allows to convert the essential units of a runner: distance, time, or absolute speed or speed relative to the vVO2max (maximal aerobic speed), pace, type of pace.The great advantage of this application lies in the flexibility of its graphical interface: simplicity in capturing is done either by clicks or by the virtual keyboard, automatic update of other parameters.Ideal for analyzing and redo a race or simply for preparing a training. 更新内容： 提升了稳定性。