Apple is continuing to refine the Health app in iOS 26.4, introducing a new Average Bedtime metric and restoring blood oxygen data to the Vitals overview graph for users in the United States.
While this isn’t a flashy update, it meaningfully improves how users can track sleep consistency and overall health trends.
Average Bedtime now available in the Health app
With iOS 26.4 beta, Apple has added an Average Bedtime metric under a new Sleep Highlight section in the Health app.
Instead of only showing average sleep duration over the past seven days (which is still available), the app now displays:
- The time you went to bed
- Your typical bedtime based on a two-week average
This gives users better visibility into sleep consistency, not just total sleep hours. Bedtime regularity is increasingly recognized as a key factor in sleep quality, and this update makes it easier to spot patterns.
By comparing your actual bedtime with your two-week average, you can quickly see whether you’re drifting later or maintaining a stable routine.
Suggested: iOS 26.4 Beta 1 Features: Playlist AI, Video Podcasts, RCS Encryption, and Security Updates
Blood Oxygen restored to the Vitals overview graph
Apple has also updated the Vitals section in the U.S., bringing blood oxygen data back into the main daily overview graph.
In earlier versions of iOS 26, blood oxygen was listed as a separate metric within Vitals, but it did not appear in the consolidated line graph. In iOS 26.4, it once again shows up directly in that daily graph view, alongside other vital metrics.
This change makes it easier to view blood oxygen trends at a glance without navigating to a separate section.
Why Blood Oxygen was previously limited
The adjustment to blood oxygen functionality stems from Apple’s legal dispute with Masimo. Masimo accused Apple of infringing on patents related to blood oxygen sensing technology and secured an import ban through the U.S. International Trade Commission.
As a result, Apple removed blood oxygen sensing from new Apple Watch models sold in the U.S. beginning in early 2024.
In August 2025, Apple reintroduced blood oxygen readouts, but only via the iPhone. Users can view blood oxygen data inside the Health app, yet there is still no ability to take blood oxygen measurements directly on the Apple Watch in the U.S.
The restoration of blood oxygen within the Vitals overview graph in iOS 26.4 improves visibility, even though the measurement limitations remain.
Availability
iOS 26.4 is currently available to developers and public beta testers. A public release is expected this spring.
While incremental, these Health app refinements show Apple continuing to prioritize sleep consistency insights and clearer presentation of key wellness metrics.
