Overview

• Fitbit says version 4.50 introduces a darker theme on Android and iOS, with availability expanding gradually through the app stores.
• A new Dark setting appears in the profile menu, while the app otherwise follows the device’s system preference for light or dark appearance.
• Google notes the majority of the app supports the new theme at launch, though a limited number of elements may not fully render initially.
• Reporters observed the update was not widely visible in Google Play or the App Store at first, with early sightings on Android beginning August 21.
• Fitbit lists benefits including reduced eye strain, improved OLED battery life, enhanced readability, and a refreshed look, and positions the update as a bridge to a larger redesign and Gemini-powered Coach preview.