Content rating
Everyone
10+
Downloads
Content rating
Everyone
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

HerDays: Personal Journal & Cycle Tracking Calendar
HerDays is a simple, intuitive, and private personal journaling app that helps women easily track milestones in their monthly cycle.

Key Features:

Cycle Logging: Track your cycle start and end dates on a user-friendly calendar interface.
Reference Estimates: Provides estimated numbers for your next cycle and potential phases based on the data you enter (for reference only).
Personal Reminders: Calendar reminders to keep you in control of your daily life.

Activity Journal & Notes: Record information about your mood, body symptoms, and daily personal activity logs to get an overview of your life rhythm.

Overview Reports: Review past months' history to understand your personal activity rhythm.

Privacy & Security (Privacy First):
Local Storage: All data you enter is stored directly on your phone. We do not have servers to collect or store this data.

No Account Required: You can use it immediately without registering a name, email, or any identifying information.

Absolute Security: We do not share or sell your data to any third party.

Important Note:
HerDays is an informational record-keeping and tracking tool. The app is NOT a medical device, does NOT provide medical advice, diagnosis, or treatment. Estimates in the app are NOT intended as a method of contraception or assisted reproduction. Always consult a healthcare professional for any health-related issues.
HerDays - Menstrual Cycle Tracker
Updated on
Aug 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

🆕 Có gì mới? ✨ Thiền định theo chu kỳ: Thư giãn với nhạc thiên nhiên và nhịp thở được tự động thay đổi theo từng ngày chu kỳ của bạn (Giúp giảm đau bụng kinh, xoa dịu PMS). Có tích hợp hẹn giờ! 🤖 Tự động đóng chu kỳ: Bạn quên ghi chú ngày hết kinh? App sẽ nhắc nhở nhẹ nhàng và tự động điền giúp bạn dựa trên thói quen cá nhân. ⚡ Cập nhật tương thích mượt mà và tiết kiệm pin cho Android 16.