redwitch

📄 Red Witch – Post-Market Surveillance (PMS) Item: Peer-Reviewed Comparison of Menstrual Tracking Apps

Document Name: “Evaluation of Menstrual Cycle Tracking Applications Available in the App Stores” Source / Link: PMC Article (2023) Document Type: External Report / Scientific Literature Purpose: Provide peer-reviewed evidence of quality, accuracy, and scientific evaluation of menstrual tracking apps. This evidence complements consumer reports by benchmarking against methodological rigor and health claims.

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1. Summary of Key Findings

• Quality Assessment

  • Review identified that many apps are popular but not scientifically validated.
  • Few apps meet standards for medical accuracy or transparent intended use.

• Regulatory Gaps

  • Only Natural Cycles and Clue Birth Control had regulatory clearance.
  • Most apps risk misuse for contraception despite disclaimers.

• Evidence-based Scoring

  • App quality varied widely across domains (engagement, functionality, aesthetics, information quality).
  • Many scored poorly on scientific credibility and data protection transparency.

• Risk of Bias

  • High reliance on user-entered data undermines prediction reliability.
  • Apps rarely disclose scientific references for algorithms.

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2. Implications for Red Witch

Requirement / Design Input	Description	Linked RMF Risk
DI-011: Evidence Transparency	All predictive models must cite scientific basis or state if heuristic.	R-Ext-010
DI-012: Clear Intended Use	Explicit disclaimers to prevent misuse as contraception.	R-Ext-007
DI-013: Evidence of Accuracy	Provide validation results (bench or clinical) in user documentation.	R-Ext-010

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3. Link to Risk Management File

RMF Risk ID	Source	Risk Description	Mitigation / Control
R-Ext-007	Women’s Health (2023), PMC (2023)	Off-label use as contraception despite lack of clearance.	Disclaimers, no contraceptive marketing.
R-Ext-010	PMC (2023)	Lack of evidence transparency undermines credibility and safety.	Publish model references, disclaimers, accuracy notes.

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4. Usage

This PMS item informs:

• SRS – Design Inputs Section: justification for transparency on scientific basis.
• RMF: identification of risk due to lack of evidence validation in market apps.
• QMS Evidence: demonstrates monitoring of peer-reviewed evaluations, not just consumer-facing reports.

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