The Verge guide to the Fitbit

Illustration by Alex Castro / The Verge Next to the Apple Watch, Fitbit is perhaps the most well-known and popular brand of fitness trackers and smartwatches.What is the difference? Fitness bands — such the Fitbit Inspire, Charge 3, and Ace 2 — have one main purpose: help you stay healthy by tracking your walks, runs, workouts, and other fitness activities and noting your sleep habits and heart rate. There are some other uses as well. For example, they will show you what time it is.