Fitbit looks set to give its app a meaningful sleep-tracking upgrade, with two new sleep metrics and signs of a navigation redesign discovered inside the Fitbit app’s latest code.
The clues were found in Fitbit app version 4.60, which rolled out in early January 2026. While the public release notes only mention bug fixes and performance improvements, strings hidden in the app code suggest new features are being prepared for a future update on both iOS and Android.
Two new sleep metrics may be coming to the Fitbit app
Fitbit wearables already offer a strong set of sleep tools, including sleep duration, sleep stages, sleep schedule tracking, and an overall Sleep Score. Devices such as the Fitbit Charge 6 can provide daily insights that help users understand how well they’re resting. Now, Fitbit appears to be expanding that experience with two additional measurements designed to add more context to your recovery.
The first is a feature called Sleep Need. Based on the wording found in the code, Sleep Need would be a calculated metric that estimates how much sleep your body needs, along with a detailed breakdown explaining how that number was determined. This could make sleep guidance feel more personal, especially for users who want to understand why the app recommends more or less rest on a given day.
The second feature is Sleep Debt. Code references suggest Fitbit will use this metric to show when you’re getting less sleep than usual and may be running low on energy. One message implies that if you’re sleeping less than your norm, you might be building “sleep debt” and should consider taking it easier. In practical terms, Sleep Debt could help people spot patterns that lead to fatigue and make better decisions about rest, workouts, and daily workload.
Both Sleep Need and Sleep Debt were previously beta tested as part of the Fitbit Personalized Sleep Schedule Lab last year, which adds weight to the idea that they’re getting closer to a wider release.
Fitbit app redesign hints: Fitness and Sleep tabs could return
Beyond new sleep metrics, there are also signs Fitbit may be preparing another user interface refresh. Right now, the Fitbit app uses a three-tab layout: Today, Coach, and You. That structure was introduced during the app redesign released in August 2023.
However, evidence found in the latest app code suggests Fitbit could bring back dedicated Fitness and Sleep tabs. Long-time users may remember the older layout, which previously offered four main tabs: Today, Fitness, Sleep, and Health. The new code doesn’t confirm exactly how Fitbit will reorganize everything, but it does point toward sleep and fitness becoming easier to access again without being buried in other sections.
Additional hints of a broader overhaul come from onboarding-style messages that reference a “redesigned app,” suggesting Fitbit may be planning not just small tweaks, but a more noticeable change in how the app looks and feels.
When will Fitbit release these new sleep features?
For now, Fitbit hasn’t confirmed when Sleep Need, Sleep Debt, or any updated tab layout will officially launch. Version 4.60 is already available, but the visible changes haven’t arrived yet, which suggests these features are being developed behind the scenes and could appear in a later server-side switch or future update.
If the rollout follows Fitbit’s usual pattern, the company may start with limited availability, then expand access once the metrics are validated across different devices and user groups. Until then, Fitbit users can keep an eye on upcoming app updates, as the next big improvements to Fitbit sleep tracking may be closer than the current changelog implies.
