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  1. v1.26iOS
    Updated for iOS 26.
    many small code tweaks.
  2. v1.25iOS
    Updated for iOS 15!
    fixed a "Night Mode" screen issue
  3. v1.24iOS
    Updated for iOS 14
    Refined Dark Mode
    Tweaked screen layouts
  4. v1.23iOS
    Freshened up for iOS 13+
    Minor bug fixes
    Improved formatting of Help files
  5. v1.21iOS
    More improvements to the User Interface!
    Restored Location and Date controls to iPad in Landscape
  6. v1.20iOS
    iOS 9.3 - 13 Compatible
    Improved Graphics
    Many internal code improvements
    Tiny bugs chased and squashed!
  7. v1.11iOS
    Added Day of Week to Date Picker and Main View
    Expanded Allowable Date Range
    Improved User Interface and made it iPhone X ready
    Fixed bug in calculation of Time until Sunset or Sunrise when in GMT mode
  8. v1.10iOS
    Our users have asked for more App features! Here they are:
    • Switch between GMT and Local Time
    • Day or Night Mode
    • Improved Time Zone placement
    • Many UI Tweaks
    • Better Startup Mode
    • Live GPS updates
    • Remove App Rating nudge
  9. v1.09iOS
    Now includes Nautical and Astronomical Twilight times as requested!
    User interface tweaks

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AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Civil Twilight Calculator, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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