Red Days
Health & Fitness
Free · Designed for iPad. Not verified for macOS.
Track your cycle privately. No accounts, no cloud, no ads — just you and your data.
Red Days is a private, offline menstrual cycle tracker designed to give you complete control over your health data. Track your period, predict your next cycle, log daily symptoms, moods, and health metrics — all without an internet connection. Your data never leaves your device.
Features:
• Period tracking with cycle predictions and fertile window estimates
• Daily health logging: flow level, symptoms, moods, temperature, weight, sleep, water intake, medications, and intimacy
• Visual calendar with color-coded cycle phases
• Cycle phase education with nutrition, exercise, and emotional wellness tips
• Statistics dashboard with cycle length trends, symptom frequency, and weight/sleep charts
• Compare up to 3 cycles side by side
• Cycle irregularity detection and alerts
• Spotting classification (period start, mid-cycle, or pre-period)
• Custom symptom tracking
• PDF health report generation for sharing with your doctor
• Data export (JSON/CSV) and import for backups
• App lock with Face ID and PIN protection
• Light, dark, and system theme modes
• Fully localized in 10 languages
Your privacy matters. Red Days stores everything locally on your device. No accounts, no cloud, no tracking, no ads.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Anthony Castor, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Anthony Castor
- Size
- 5.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- iPhone
- Languages
Filipino and 8 more
- Filipino, French, German, Hindi, Japanese, Malay, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © Anthony A. Castor