Modernizing the Fitbit Developer Experience.
The Fitbit Web APIs are moving to a new, scalable infrastructure. We will be deprecating the legacy Fitbit Web API in September 2026. To ensure uninterrupted data continuity for your users, you will need to migrate your applications. Detailed migration guides are live on the Google Health API developer site.
Design Guidelines
chevron down
 

Design Guidelines

Overview

Design clocks and apps for Fitbit OS with our system of visual styles and interactive components that are simple to use or modify.

Our Fitbit OS guidelines teach you how to best apply our available styles and components to create experiences that are accessible, clear, and consistent for users.

We're still updating these guidelines for the new design system in Fitbit OS 5.0. Check back soon!