So I just got the VivoFit 3 days ago, and so far I really like it. Bear with me if this question/issue has already been asked - I've been looking and I can't find it.
I have done the same workout for 3 days (Yoga for Weightloss) - first 2 days had my Polar FT7 on and the last I had the VivoFit w/ heartband. Polar registered 157 and Vivo registered 130. It's not a huge difference, but still a difference. Another workout I did (Leslie Sansone Walk at Home), with Polar - registered 330, with Vivo - 192. That's a big deal...
What's going on? Is this normal? Is this something that will get fixed with time and use?