Jennis ⭐⭐⭐⭐
Key Takeaways
Core Features: Jennis offers personalised movement, nutrition, and recovery guidance tailored to hormone fluctuations across the menstrual cycle. Designed for cycle syncing and performance tracking.
Design & Inclusivity: Sleek, athlete-informed interface with empowering tone. Language is largely cis-centric but makes efforts toward inclusivity.
Data Handling: GDPR-compliant with clear privacy practices. Minimal third-party sharing, and user data remains within EU servers.
Verdict Summary: A well-designed app blending sports science and hormone literacy—ideal for active women, though not a medical diagnostic tool.
Medical Integrity
Score: ⭐⭐⭐⭐☆
Jennis is backed by sports scientists and uses credible research to inform its cycle-based recommendations. While not a clinical tool, it avoids overstepping medical boundaries.
Doctor’s Note:
Strong science-based approach that respects scope of practice. Would benefit from clearer citations and disclosures for lay users.
Ethical Standards
Score: ⭐⭐⭐⭐☆
Transparent about coaching limits and non-medical positioning. In-app content avoids exploitative claims and reinforces body literacy.
Doctor’s Note:
Commendable use of ethical design—empowering without fear-mongering. Could include more explicit inclusivity for trans and non-binary users.
Data Privacy & Protection
Score: ⭐⭐⭐⭐☆
Clear GDPR compliance, no data monetization, and secure infrastructure. Users can access and delete data easily.
Doctor’s Note:
A high standard for privacy compared to most health apps. Well done.
UX & Accessibility
Score: ⭐⭐⭐⭐☆
Easy to navigate, with a thoughtful interface and workout options tailored by energy levels. However, lacks deeper accessibility tools (e.g. screen reader support, multilingual options).
Doctor’s Note:
High-functioning UX for the general population. Next step is broadening accessibility.
Behavioral Impact
Score: ⭐⭐⭐⭐☆
Encourages a strengths-based mindset and adapts to physical/mental energy throughout cycle phases. Subscription model is transparent and content is accessible.
Doctor’s Note:
Supports sustainable habits and user autonomy—minimal manipulation. One of the better models in this respect.
Final Score: ⭐⭐⭐⭐☆ (4/5 stars)
Verdict:
Jennis stands out for its integration of cycle-based fitness science, ethical transparency, and data protection. It’s not a clinical tool, but for active users seeking body literacy and performance tracking, it’s a top-tier choice.
Review Notes
This review reflects the app’s performance as of 10/06/2025. If the app significantly improves or changes, the SheRanked team welcomes the developers to request a re-evaluation, which could lead to a score update or a SheRanked Doctor’s Approval Badge.
Reviewed by: Dr. Christina Davies, SheRanked Doctor-led Review
Review Date: 10/06/2025
Medical Disclaimer
This review is for informational purposes only and should not be considered medical advice.
Official Website: https://www.jennis.com