JulianCal

Julian Day & Batch Codes

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

JulianCal is the ultimate app for calculating and displaying the Julian Day of the year, an essential tool for production, logistics, and batch tracking. KEY FEATURES Real-time Julian Day • Display Julian Day of the year (1-365/366) • Automatic updates every minute • Leap year indication Customizable Batch Code • Generate automatic batch codes with custom prefix • 2 or 3-digit format for Julian Day • One-tap copy to clipboard Julian Day → Date Converter • Convert instantly from Julian Day to calendar date • Support for years 1900-2100 • Detailed info: day of week, week number, quarter Interactive Calendar • View calendar with Julian Day for each date • Select any date to see details • Switch between monthly and weekly view Year Progress • Visualize percentage of year passed • Animated progress bar • Days remaining until year end Statistics & Information • Week number of the year • Current quarter (Q1-Q4) • Days remaining in current year • Julian Day Number (since January 1, 4713 BC) USE CASES Production & Manufacturing: Product tracking and batch codes Logistics: Shipment organization and expiry dates Agriculture: Harvest planning and crop cycles Project Management: Working days and deadlines Science & Research: Astronomical calculations FEATURES • Modern and intuitive interface • Automatic light and dark theme • Works offline • Quick copy to clipboard • Full Italian and English support • Lightweight and fast • Free app with discreet ads PERFECT FOR • Production managers • Logistics operators • Project managers • Farmers and gardeners • Researchers and students • Anyone needing quick Julian Day calculations Download JulianCal now and simplify your work with Julian Days!

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What's new in 1.5.0: • Home Screen widgets! Add the Julian Day, the date and the batch code right on your Home Screen, in several resizable sizes. • New week-number widget. • App icon badge: see the Julian day or the week number at a glance (enable it in Settings). • The number updates automatically at midnight, in your phone's time zone. • Improved widget design: large, centered number. • Various fixes and stability improvements.

Version 1.5.0

The developer, Matteo Masin, 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
    • Matteo Masin
    Size
    • 40.1 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © Matteo Masin
  • Developer Website
  • Privacy Policy

    • More by Matteo Masin

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