Period Calender - App Review
Key Takeaways
Period & Ovulation Tracking: Period Calendar offers basic cycle tracking with visual predictions, reminders, and symptom logs. However, ovulation and fertility predictions are not evidence-based and lack personalization based on biomarkers.
Data Privacy: There are serious concerns around user data, with vague consent practices and prior reports of third-party data sharing.
User Experience: The interface is approachable and colorful, but symptom logging relies heavily on emojis and lacks medical precision.
Verdict: Period Calendar may suit users seeking simple tracking, but fails to meet medical, ethical, and privacy standards required for serious health support.
Medical Integrity
Score: ⭐⭐☆☆☆
The app does not appear to involve medical professionals in developing its content or predictions. There’s no sourcing for educational material, and ovulation calculations are overly simplified.
Doctor’s Note: This app does not provide clinically validated insights. While it's accessible, users should not rely on it for fertility planning or reproductive health decisions without professional guidance.
Ethical Standards
Score: ⭐⭐☆☆☆
The app lacks clear consent mechanisms and transparency about how user data is used or monetized. There's also no ethical framework guiding its educational content or features.
Doctor’s Note: Ethical health apps need to clearly inform users about what’s happening with their data and content. Period Calendar doesn’t provide this clarity, especially for younger or vulnerable users.
Data Privacy & Protection
Score: ⭐☆☆☆☆
Period Calendar has a history of problematic privacy practices, including potential third-party data sharing without adequate user control. The privacy policy is dense and lacks clear user rights, especially around opt-outs and deletion.
Doctor’s Note: Data privacy is non-negotiable. This app currently fails to meet basic expectations for secure handling of sensitive health data.
UX & Accessibility
Score: ⭐⭐⭐☆☆
The app is bright, customizable, and easy to use, but its symptom logging is overly simplified and lacks features for accessibility (e.g., screen reader compatibility or multilingual support).
Doctor’s Note: A positive experience shouldn’t come at the cost of depth or inclusion. The app’s design is beginner-friendly, but not medically informative or inclusive of different user needs.
Behavioral Impact
Score: ⭐⭐☆☆☆
The app uses notifications and gamified design elements that may encourage daily check-ins or upgrades. It doesn’t offer meaningful behavior change support or education.
Doctor’s Note: Behavior nudges should empower, not pressure. This app leans more into habit-formation than informed decision-making, which limits its long-term benefit.
Final Score: ⭐⭐☆☆☆ (2.2 out of 5)
Verdict
Period Calendar is a user-friendly, entry-level tracker—but it lacks the medical oversight, ethical transparency, and privacy protections that would make it trustworthy for long-term reproductive health use.
Review Notes
This review is based on the app’s performance as of 14/04/2025. 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 Christina Davies, SheRanked Doctor-led Review
Review Date: 14/04/2025
Medical Disclaimer: This review is for informational purposes only and should not be considered medical advice. A
Official Website: https://period-calendar.com