Fitbit to Launch Hypertension Study with Google Pixel Watch [Fitbit Labs]

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Key Points of This Article

• Fitbit appears to be conducting a study called the “Fitbit Hypertension study” (codename: Tidal) to identify signs of high blood pressure using the Google Pixel Watch series.
• Based on our own investigation, we have discovered references to the “Fitbit Hypertension study” within the code of the Fitbit for Android app, version v4.53, released around Monday, October 6, 2025.
• The “Fitbit Hypertension study” is a screening study that utilizes data collected by the Google Pixel Watch. In essence, it is a limited study to determine if the Google Pixel Watch can detect signs of high blood pressure.

Fitbit, the fitness tracker manufacturer under Google, appears to be conducting a study called the “Fitbit Hypertension study” (codename: Tidal) to identify signs of high blood pressure using the Google Pixel Watch series.

Based on our own investigation, we have discovered references to the implementation of the “Fitbit Hypertension study” in the code of the Fitbit for Android app, version v4.53, released around Monday, October 6, 2025. The upcoming “Fitbit Hypertension study” from Fitbit is a screening study that will use data collected from the Google Pixel Watch. In short, it is a limited study to determine whether the Google Pixel Watch can detect signs of high blood pressure.

Data for the study will be collected from users who opt-in through “Fitbit Labs,” a section for experimental features within the Fitbit for Android app. Additionally, a select group of users will be provided with a blood pressure monitor that must be worn for 24 hours. The monitor must be returned, and upon its successful return, participants will receive a $50 compensation.

However, the regions where the “Fitbit Hypertension study” will be available are currently unknown. It is expected to be available in the United States, at the very least.

<string name="tidal_done_button">Done</string>
<string name="tidal_eligibility_pending_body">Thank you for your consent to join the Fitbit Hypertension study. Your interest in helping us advance research for hypertension screening with the Pixel Watch is greatly appreciated. nnWe are now reviewing enrollments to select participants for 24-hour blood pressure monitoring. If you are chosen for this next step, we will be in touch with more details</string>
<string name="tidal_eligibility_pending_title">Your Enrollment is Underway</string>
<string name="tidal_eligible_body">You are now enrolled in the study. We are now reviewing enrollments to select participants for 24-hour blood pressure monitoring. If you are chosen for this next step, we will be in touch with more details. nnIn the meantime, please continue to wear your watch as you normally would. This allows us to gather the necessary sensor data for this initial phase of the study, with no extra effort needed from you. nnThank you for your consent to join the Fitbit Hypertension study. Your interest in helping us advance research for hypertension screening with the Pixel Watch is greatly appreciated.</string>
<string name="tidal_eligible_title">You're all set</string>
<string name="tidal_enrollment_confirmation_body">Next, you’ll complete a series of questionnaires to help us select participants to receive a BP monitor. This will take about five minutes.</string>
<string name="tidal_enrollment_confirmation_title">Next step</string>
<string name="tidal_enrollment_introduction_body">A Fitbit Labs Study to advance research on identifying signs of Hypertension.</string>
<string name="tidal_enrollment_introduction_disclaimer">The information provided by this lab output is for research and informational purposes only and does not constitute medical advice.</string>
<string name="tidal_enrollment_introduction_list_item_1">Provide your consent to join the study and fill out questionnaires.</string>
<string name="tidal_enrollment_introduction_list_item_2">If selected, all participants will have sensor data collected from their watch during normal wear. A select group will also be asked to wear a monitor to measure blood pressure for 24 hours.</string>
<string name="tidal_enrollment_introduction_list_item_3">Participants randomly selected to wear a 24 hour BP monitor will be compensated $50 for completing and returning equipment.</string>
<string name="tidal_enrollment_introduction_list_item_4">This study may increase your Pixel Watch’s battery consumption.</string>
<string name="tidal_enrollment_introduction_title">Fitbit Hypertension Study</string>
<string name="tidal_entrypoint_action_dismiss">Dismiss</string>
<string name="tidal_entrypoint_action_view">Learn more</string>
<string name="tidal_entrypoint_subhead">A study to advance research on identifying signs of hypertension</string>

If this “Fitbit Hypertension study” confirms its effectiveness, a high blood pressure detection feature will be officially rolled out to the Google Pixel Watch series in the future. However, as it is still in the research stage, a hypertension detection feature for the Google Pixel Watch series is not guaranteed.

Fitbit App Link