더데이 - 생리 달력 - Menstrual calendar & tracking
Discover a streamlined menstrual calendar app that simplifies tracking cycles, fertile days, & health reminders for busy women.

- 1.7.8 Version
- 1.6 Score
- 615K+ Downloads
- Free License
- 3+ Content Rating
Simple Menstrual Calendar - The Day
Streamlined features for your needs
A menstrual calendar designed with only the essential features women require - The Day!
Check it out now!
♡ Features of the Menstrual Calendar - The Day
▶ Monthly and Yearly Calendars
- Easily viewable monthly and yearly calendars.
- Selectively display the days that matter to you, such as menstruation, fertile, and ovulation days.
▶ Simple Data Input
- Quickly input, modify, or delete entries with just a tap.
▶ Countdown to Your Next Cycle
- Access simple stats through an intuitive physiological info interface.
- Check how many days are left in your cycle using the D-Day feature on the calendar.
▶ Personalize Your Calendar
- Adorn your calendar screen using the sticker feature.
- Customize themes and calendar view settings to your liking.
▶ Privacy Protection
- Secure your data with a password function, ensuring only you have access!
▶ Special Days Tracking
- Keep track of special days like love days, birth control dates, menstrual flow, and personal notes with convenient icons on the calendar.
▶ Reminders for Busy Lives
- Set alarms for period dates, fertile days, and ovulation dates, complete with customizable sounds and messages.
▶ For Irregular Cycles
- Improved accuracy by differentiating between fixed and average methods for due date calculations.
▶ Note Taking Made Simple
- Log daily notes and photos for easy reference on your calendar.
▶ Medication Management Made Easy
- Track your medication details by time, type, and quantity effortlessly.
▶ Changing Phones? No Records Lost!
- Use Google Drive for seamless backup and recovery anytime you switch devices!
Your feedback is invaluable, so if there are any features you'd like to see added or any issues encountered, please let us know!
Your insights will definitely be taken into consideration!
Permission Overview
▶ Photos, Videos, Files (selected)
- Required for loading images.
▶ Notifications (optional)
- Needed to present notifications in the notification bar.
※ You can still use the service even if you decline optional permission requests, excluding specific functionalities.
What the difference between others :
1. Functional Features
D-Day: Offers basic period tracking, remaining cycle queries, D-Day reminders, and sticker decorations. With a simple interface and easy operation, it suits users who don’t need complex functions.
Other apps: Such as Clue, Period Tracker, and Eve typically provide detailed cycle analysis, ovulation prediction, pregnancy management, health reminders, etc. They are ideal for users seeking comprehensive information.
2. User Experience
D-Day: Emphasizes a clean, intuitive interface that’s easy for new users to master. User feedback praises its operational convenience and interface design.
Other apps: Richer in functions but more complex to operate, often taking up more storage. They may feel cumbersome for users who prefer simplicity.
3. Personalization & Fun
D-Day: Provides sticker decorations to add fun, allowing users to customize the interface.
Other apps: May offer more diverse personalization settings, tags, and statistical reports to meet various needs.
4. Market Positioning
D-Day: Targets users who prefer simple, easy-to-use period calendars, focusing on basic functions.
Other apps: Caters to users needing detailed cycle analysis, health monitoring, or pregnancy management.
5. Reviews & Reputation
D-Day: Receives positive feedback, especially from first-time users or those who favor simple interfaces.
Other apps: With a broad user base due to rich functions, but some users report cluttered interfaces or excessive ads.
Conclusion
If you prefer a simple-to-use, intuitive period calendar, D-Day is an excellent choice. For professional, detailed cycle analysis and health management, consider more comprehensive applications.
- Version1.7.8
- UpdateJun 26, 2025
- DeveloperHS App
- CategoryHealth & Fitness
- Requires AndroidAndroid 4.0.3 – 4.0.4+
- Downloads615K+
- Package Nameconstant.milk.periodapp
- Signature5e89c97a905673d80d57dad2fe73229c
- Available on
- ReportFlag as inappropriate