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Active, not recruitingNCT04198194Updated Feb 21, 2025

Apple Heart & Movement Study

An observational study in Prevention, sponsored by Apple Inc.. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-02-21.

Sponsored by Apple Inc. · Observational

From the registry’s dates

  • Primary completion was expected by Feb 2025, 1 year 7 months ago, but the record still lists the study as active, not recruiting.
Study type
Observational
Model
Other
Time perspective
Cross-sectional
Enrollment
500,000
Ages
18 Years and older
Sex
All
01

Study summary

This study will look for factors that affect heart health and potentially cause deterioration in mobility or heart function. Participant's Apple Watch and iPhone can help researchers gain a better understanding of potential early warning signs. This can lead to new interventions and products that will help millions lead longer, healthier, and more active lives.

02

Conditions studied

  • Prevention
03

In context

Lead sponsor

Apple Inc. is the lead sponsor of 12 studies on the registry; 2 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 6 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Sampling method
Non-probability sample

Study population

Participants will self-enroll in this trial, if they meet inclusion criteria, and there will be no active recruitment of any particular population. Invitation to volunteer.

Eligibility criteria

Inclusion Criteria:

  • Be at least 18 years old (at least 19 years old in Alabama and Nebraska, at least 21 years old in Puerto Rico);
  • Live in the United States of America;
  • Have an iPhone;
  • Have an Apple Watch (Series 1 or later) at the time of enrollment;
  • Have the Apple Research app installed on your iPhone;
  • Be comfortable communicating in written and spoken English;
  • Not share your iCloud account, iPhone, or Apple Watch with anyone else;
  • Be willing and able to provide informed consent to participate in the study.
05

Study design

Observational model
Other
Time perspective
Cross-sectional
Enrollment
500,000 participants (estimated)
Patient registry
No

Groups and cohorts

  • Participants with events

    Individuals who have experienced any of the listed outcomes

    Diagnostic Test: Predictors of events

  • Participants without events

    Individuals who have not experienced any of the listed outcomes

Interventions

  • Diagnostic testPredictors of events

    Apple Heart \& Movement Study in Apple Research app

06

What researchers measure

Primary outcomes

  1. Number of Participants with Chronic Disease Events

    Change in number of participants with incident cardiovascular disease events (including myocardial infarction, coronary revascularization, heart failure hospitalization, stroke/TIA hospitalization, atrial fibrillation, and atrial fibrillation hospitalization), fall events, and other hospitalizations, assessed by patient report.

    Time frame: quarterly (every 90 days) through study completion (up to 5 years)

07

Study locations

1 site
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 21, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04198194
Lead sponsor
Apple Inc.
Collaborators
American Heart Association
Responsible party
Calum A. MacRae (Principal Investigator, Brigham and Women's Hospital) — Principal investigator
First posted
Dec 13, 2019
Start date
Nov 14, 2019
Primary completion
Feb 28, 2025 (estimated)
Completion
Feb 28, 2025 (estimated)
Last update
Feb 21, 2025

Study contacts

Calum A MacRae, MD, PhD
principal investigator · cmacrae@bwh.harvard.edu
Angela M Spillane
study director · amspillane@bwh.harvard.edu

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Feb 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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Other studies from this sponsor

Apple Inc.

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