# Cycle and Ovulation Study Expansion

> **NCT05852951** · — · COMPLETED · sponsor: **Apple Inc.** · enrollment: 698 (actual)

## Conditions studied

- Menstruation

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT05852951
- **Lead sponsor:** Apple Inc.
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-06-09
- **Primary completion:** 2022-05-23
- **Final completion:** 2022-05-23
- **Target enrollment:** 698 (ACTUAL)
- **Last updated:** 2023-05-10

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05852951

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05852951, "Cycle and Ovulation Study Expansion". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT05852951. Licensed CC0.

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