Fitbit app 4.50 rolls out on Android, iOS with dark theme [U]

Abner Li | Aug 27 2025 - 3:14 pm PT

Ahead of the Gemini-powered Coach preview later this year, Fitbit app 4.50 is rolling out with a dark theme on Android and iOS. This is independent of the Material 3 Expressive redesign.

Update 8/27: Google has widely rolled out version 4.50 of Fitbit for Android. The dark theme update has been rolling out over the past week and hit full Play Store availability today.

Meanwhile, all Pixel Watch users should now have Material 3 Expressive in Fitbit Today. The bigger design update is for the Wear OS Tiles.

Original 8/20: Following the Made by Google 2025 event, Fitbit shared that “you can now switch to a darker theme” for a “more comfortable viewing experience, especially in low-light conditions.” Other mentioned highlights include:

Advertisement - scroll for more content

Reduced eye strain: The darker colors emit less blue light, which can help alleviate eye fatigue, particularly during evening use.
Improved battery life: For devices with OLED screens, Dark Mode can significantly reduce battery consumption by lighting up fewer pixels.
Enhanced readability: The high contrast between text and background can make information easier to read for some users.
Sleek new Look: It gives your Fitbit app a fresh, modern appearance that’s easy on the eyes.

Top comment by ApplesArrogance

Liked by 5 people

This took an embarrassingly long time to arrive. Glad it is finally there, however I have since moved on to another app.

View all comments

Update: Fitbit app 4.50 is rolling out to Google Play for Android (not wide) and the iOS App Store.

After updating, Settings (from the profile menu) will show a new “Theme” menu with “System default” automatically selected, but you can manually set “Light” or “Dark.”

Google says the “majority of the Fitbit app will support Dark Mode,” but that a “limited number of elements may not fully render in the dark theme at the initial launch.”

We’re constantly working to improve your Fitbit experience. We appreciate your patience and are excited for you to try out as we release this highly awaited feature!