Zip under counting steps

[Anniepie]

I wore my sister Fitbit flex on my wrist and my Fitbit zip on my waist and there has been a a 1209 different with my zip under stepping. My iPhone seemed to be more a less with the flex range. It's quite frustrating. I had the Fitbit charge but I hate charging it every several days so I opted for the zip.

[HeydyF]

Hi @Anniepie welcome to the Fitbit Community!  I'll explain why you don't have to compare wrist trackers clip based trackers. Fitbit wrist-based trackers have been tested extensively against the clip-based devices like the Fitbit One and Fitbit Zip. That said, because wrist-based trackers are specifically designed for your wrist, if you move your body a lot and not your arms (or vice versa), you may get a slight difference in activity than you would see on your clip-based trackers. Additionally, since you're more likely to wear your wrist-based tracker 24/7, you may count a few more steps.​ 

Now regarding the battery, I understand that you prefer to use the Zip instead of the Flex so you don't have to charge the battery every 5 to 7 days. 

Let me know if you have more questions! I'll be around!