I've had my Vivosmart for about a year with great success. Suddenly, perhaps after the recent software update, the distance estimate on the Vivosmart is wildly off. I've previously entered custom walk and run stride lengths, and they've worked great. For example, I walked/ran about 20,000 steps today (about 9 miles) but the Vivosmart only 'measured' 3.4 miles. I don't understand why the sudden change and the very wrong measurement of distance. Any help appreciated!
Kent in Michigan