Flo ⭐⭐⭐
Key Takeaways
Period & Ovulation Tracking: Flo uses AI and user input to predict menstrual and ovulation cycles, offering extensive symptom tracking, though its accuracy still depends on regular use and individual variation.
Data Privacy: After a major privacy controversy, Flo has introduced Anonymous Mode and now claims GDPR compliance—yet concerns linger over third-party analytics.
User Experience: Visually sleek and user-friendly, but increasingly commercialised with upsells to premium features that may detract from trust.
Verdict: Flo is improving and still widely used, but it walks a fine line between education and exploitation, especially given its past issues with transparency.
Medical Integrity
Score: ⭐⭐⭐☆☆
Flo provides content verified by medical professionals, and it offers detailed cycle tracking with a wide range of user inputs.
Doctor’s Note: While the app includes doctor-reviewed material, it lacks depth and clinical nuance—its medical credibility is surface-level rather than foundational.
Ethical Standards
Score: ⭐⭐☆☆☆
Flo’s ethics were called into question after sharing sensitive user data with third parties without fully informed consent. Updates have been made, but the initial breach still casts a shadow.
Doctor’s Note: Ethical transparency is non-negotiable in women’s health—past actions have undermined trust, and rebuilding that trust requires ongoing proof, not promises.
Data Privacy & Protection
Score: ⭐⭐⭐⭐☆
Flo now includes privacy-enhancing tools such as Anonymous Mode and claims compliance with data laws like GDPR. However, earlier breaches resulted in regulatory investigation and settlement.
Doctor’s Note: Improvements are visible and welcome, but the fact that user data was once vulnerable means users must still approach with caution.
UX & Accessibility
Score: ⭐⭐⭐☆☆
The design is modern and appealing, with intuitive navigation and easy symptom logging, but constant nudges toward paid content can overwhelm the experience.
Doctor’s Note: Flo is accessible for many, but there's a noticeable gap in inclusive design—particularly for neurodiverse users or those with impairments.
Behavioral Impact
Score: ⭐⭐☆☆☆
Flo leverages behavioural nudging to drive usage and conversion to premium, which may cause stress or misinformation for users expecting medical-grade accuracy.
Doctor’s Note: Apps that use health-related fear or urgency to upsell services risk harming user trust and wellbeing—it’s marketing dressed as medicine.
Final Score: ⭐⭐⭐☆☆ (3/ 5)
Verdict
Flo is one of the most well-known women’s health apps, with real improvements in privacy and user experience. But its commercial priorities and data-sharing history mean that users should remain alert and discerning. It’s a solid starting point—but not gold-standard.
Review Notes
*This Review is based on the app’s performance as of Review Date: [07/04/2025]. If the app undergoes significant updates or improvements, the developers are welcome to reach out for a re-evaluation, which may lead to a higher score and potentially a SheRanked Doctor’s Approval Badge
Reviewed by: Dr C Davies, SheRanked Doctor-led Review
Medical Disclaimer
This review reflects an expert evaluation by a medical doctor, based on the app’s clinical credibility, ethical standards, data protection practices and user safety profile. It is not intended to provide individual medical advice, but rather to assess the app’s integrity and reliability for women’s health use.