The body media armband is great although the interface does not work well with all Androids. At one point, I cancelled my subscription and was not aware that the cancellation did not go through. When I re-instated the monthly subscription, I was charged twice; once for the new month and once for a past due balance. The portal did not notify me that a past due balance existed and I did not know the second charge would appear on my credit card statement. I asked for the second charge to be removed due to lack of authorization and notification, and Body Media customer service refused. I think it's a little underhanded and unethical and not happy with the response.