Hi all,
if you like vivofit 4 for its simplicity as me, but you are sad, that an activity (e.g. running) is whole in one lap, against higher models like vivosmart 4 or vivoactive 4, there is a solution.
I have developed the 1st version of python script, which is able to an activity splits into laps - vivofitLaps.
Feel free to use that.