Good app but deletes steps

I like the app but sometimes I can have it on while walking and right before my eyes it changes to a lower number. I thought it was a fluke but it happens all the time. Yesterday on my walk from the car to the office it went from 810 steps to 356 by the time I stop walking. So I have another app to make sure its accurate. I wish I didnt have to do that.

KimAAAA2613 about Slife fitness and move tracker