Moon Codex

Lunar Calendar & VOC Tracker

$4.99 · Designed for iPad. Not verified for macOS.

Track moon phases, zodiac transits, and Void of Course periods with precision and style — plus a new Codex for learning. 200 years of astronomical data, entirely offline. Starting something new? Wondering if today's the right day to sign that contract? Check tonight's moon before a big decision, or look up the exact phase on the day you were born. Moon Codex puts two centuries of precise lunar data on your device — phases, transits, and Void of Course periods, accurate to the minute. No internet, no accounts, no tracking. PLAN AROUND THE LUNAR CYCLE Check tonight's phase and sign before making decisions. See exactly when the next transit or VOC period starts. Weekday labels and upcoming event lists make it easy to plan days ahead without flipping through calendars. LOOK UP ANY DATE FROM 1900 TO 2100 Slide to any date across two centuries or step month by month. Tap the moon to snap back to today. Every sign change, phase shift, and VOC window is timed to the minute — useful for chart work, journaling, or just satisfying your curiosity about a specific date. LEARN AT YOUR OWN PACE The built-in Codex covers moon phases, zodiac signs, planets, aspects, Void of Course, and practical timing — 40+ articles written plainly, without jargon walls. Tap any event in your timeline and jump straight to the article that explains it. KEEP IT ON YOUR HOME SCREEN Three widget sizes plus a lock screen widget. Full iOS 26 tinting and translucent support. Glance at the current phase without opening the app. NOTHING HIDDEN ± 1 minute accuracy from professional ephemeris-grade algorithms. No ads. No subscriptions. No analytics. Dark mode throughout. Runs on iPhone and iPad with full landscape support on both (also on Mac, built for iPad). Buy it once and it just works.

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v1.3.1 Fixed bug where sign change would appear as VoC end for negligible (less than 1 min) undisplayed VoC periods v1.3.0 Codex tab — 40+ articles on moon phases, zodiac signs, planets, aspects, Void of Course, and practical lunar planning. Written to actually be useful, not to fill space. Tap to learn — Tap any event row (phase change, sign transit, VOC period) and jump directly to the relevant Codex article. Landscape support — Full landscape mode on iPhone. Improved landscape layouts on iPad. VOC accuracy fix — Corrected several Void of Course date calculations.

Version 1.3.1

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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • BOGDAN GEORGE BARBUS
    Size
    • 28.5 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    • iPad
      Requires iPadOS 18.6 or later.
    • Mac
      Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2025 - Barbus Bogdan George
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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