Observational study on women's menstrual health using an app

Apple Women's Health Study

Observational Apple Inc. · NCT04196595

This study is trying to learn more about women's menstrual health and related conditions by having women use an app to share their experiences.

Quick facts

Study typeObservational
Enrollment500000 (estimated)
Ages18 Years and up
SexAll
SponsorApple Inc. Industry-sponsored
Locations1 site (Boston, Massachusetts)
Trial IDNCT04196595 on ClinicalTrials.gov

What this trial studies

This observational longitudinal study aims to enhance the understanding of menstrual cycles and gynecologic health conditions, including polycystic ovary syndrome (PCOS), infertility, and breast cancer. Participants will use the Apple Research app to enroll and contribute data regarding their menstrual health. The study focuses on gathering insights from a diverse group of women to inform future health initiatives and research. By leveraging technology, the study seeks to create a comprehensive database that can lead to better health outcomes for women.

Who should consider this trial

Good fit: Ideal candidates are women aged 18 and older who have menstruated at least once and are comfortable using the Apple Research app.

Not a fit: Patients who do not menstruate or are not comfortable using technology may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights that lead to improved management and treatment options for menstrual and reproductive health issues.

How similar studies have performed: Other studies utilizing mobile health technology for women's health have shown promise, indicating that this approach could be effective.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Have menstruated at least once
* 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
* Be comfortable communicating in written and spoken English
* Have installed the Apple Research app on your iPhone
* Not share your iCloud account or iPhone with anyone else
* Be willing and able to provide informed consent to participate in the study

Where this trial is running

Boston, Massachusetts

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Menstrual CycleOvulationMenstruationPolycystic Ovary SyndromeInfertilityMenopauseReproductionReproductive Health
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.