Inside the Fitbit S-1, Worrying About What’s Not Said

Deconstructing financial documents is a particular skill, and RockHealth gets very deep on Fitbit’s registration to go public. One of the major points that Fitbit avoids talking about, RockHealth notes, is anything about user engagement and churn. Because product sales have been increasing so fast, it’s hard to get a handle on how fast Fitbit […]