
Moon Codex
Lunar Calendar & VOC Tracker
Only for iPhone
$4.99 · Designed for iPhone
iPhone
Track moon phases, zodiac signs, and Void of Course periods with precision and style. New controls let you navigate 200 years of data effortlessly—completely offline.
Moon Codex provides precise lunar tracking with professional-grade astronomical calculations. Navigate 200 years of moon phases, zodiac signs, and Void of Course periods—entirely offline with intuitive controls.
NEW in v1.1.0: Month navigation arrows let you explore lunar cycles effortlessly. Tap the moon graphic to instantly return to today.
ACCURATE & RELIABLE
Built with professional astronomical algorithms providing ±1 minute accuracy across two centuries of data. Trusted by astrologers, gardeners, and lunar cycle enthusiasts worldwide.
KEY FEATURES
- Real-time moon phase with accurate illumination percentage
- Current zodiac sign with beautiful graphics
- Void of Course period tracking with complete aspect details
- 200 years of pre-calculated data (1900-2100)
- Month-to-month navigation with arrow controls
- Tap moon to instantly return to current date
- Works completely offline—no internet required
- Dark mode optimized throughout
- Three home screen widgets + lock screen widget
- Smooth animations with haptic feedback
COMPREHENSIVE VIEWS
Today View: See the current moon phase, zodiac sign, and illumination percentage at a glance. The graphical moon display shows tonight's exact lunar appearance with parallax motion effects.
Monthly Calendar: Browse all lunar events in a chronological timeline. Every sign change, phase transition, and VOC period is displayed with precise timing down to the minute.
Date Explorer: Navigate any date from 1900 to 2100 with an intuitive slider and month navigation arrows. Perfect for planning future events or reviewing historical lunar patterns.
VOID OF COURSE TRACKING
Moon Codex shows when the moon is Void of Course—the period between the moon's last major aspect in a sign and its entry into the next sign. See exact start and end times, which sign the moon occupies, and complete details about the final planetary aspect that begins each VOC period.
BEAUTIFUL WIDGETS
Small Widget: Current moon phase and zodiac sign
Medium Widget: Detailed lunar data with illumination percentage
Lock Screen Widget: Quick-glance moon information always visible
All widgets update automatically and share data seamlessly with the main app.
OFFLINE CAPABILITY
All 200 years of astronomical data is pre-calculated and stored locally on your device. Moon Codex works perfectly without an internet connection, making it reliable anywhere—from remote locations to airplane mode.
PROFESSIONAL PRECISION
Unlike generic moon apps that estimate phases, Moon Codex uses professional astronomical calculations accurate to within one minute. Every phase transition, sign change, and VOC period is precisely timed using the same algorithms trusted by professional astrologers.
Perfect for:
- Astrologers tracking lunar transits and timing elections
- Gardeners following lunar planting calendars
- Anyone interested in understanding lunar influence on daily life
- Those seeking reliable astronomical data offline
No subscriptions. No ads. No data collection. Just precise lunar information at your fingertips.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
NEW in v1.1.0:
- Month navigation: Jump through months using arrow buttons
- Quick return to today: Tap the moon graphic to instantly jump back to the present moment
- Smooth animations and haptic feedback throughout
IMPROVEMENTS
- Faster month loading with smart data caching
- Improved performance when browsing historical dates
- Enhanced date slider responsiveness
This update makes exploring lunar cycles across months effortless. Navigate 200 years of moon data with ease!
The developer, BOGDAN GEORGE BARBUS, 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
- BOGDAN GEORGE BARBUS
- Size
- 26.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 - Barbus Bogdan George
