Best Julian Date Apps

170+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated May 2026

Every iPhone needs a few good julian date apps. We benchmark 170+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Julian Date

Julian - Quick Dates#1

Julian - Quick Dates by Juan Carlos Perez

Julian dates at a glance
Editor's Choice
πŸ”§ Utilities
4.8😊(4K ratings)
FreeIn-App Purchases
Julian - Quick Dates screenshot 1
Julian - Quick Dates screenshot 2
Julian - Quick Dates screenshot 3
Julian - Quick Dates screenshot 4

Julian - Quick Dates provides a convenient way to view and copy 11 different date formats with a built-in calendar for easy reference. It also offers the option to display the current date on the badge icon and supports various watch face complications for Apple Watch users. Experience efficient date management with Julian today!

What We Love

  • πŸš€ Excellent for work/professional use
  • πŸ‘ Simple and easy to use
  • πŸ‘ Helpful for daily tasks
  • πŸ‘ Convenient complication on Apple Watch

Room to Improve

  • πŸ› Complication issues on Apple Watch (not updating, getting stuck)
  • πŸ› Date discrepancies between app and complication
  • πŸ› App not functioning properly after updates
Julian Date#2

Julian Date by Jevon Charles

Strong Contender
πŸ“Š Productivity
4.8😊(2.7K ratings)
FreeIn-App Purchases
Julian Date screenshot 1
Julian Date screenshot 2
Julian Date screenshot 3

What We Love

  • πŸš€ Best Julian Date App
  • πŸ‘ Great
  • πŸ‘ Love this APP
  • πŸ‘ Military

Room to Improve

  • πŸ€” Could be improved
  • πŸ€” Good but...
  • πŸ€” Good app
JulianDatr#3

JulianDatr by Partial Apps Corp

Optimize your time
Worth Considering
πŸ“Š Productivity
5.0(1 ratings)
Free
JulianDatr screenshot 1

Track how many days and weeks you've used in the year and how many are left to optimize your time. Stay on top of your yearly goals and deadlines with this simple and effective tool.

More Julian Date apps to explore

4
Julian Clock
Julian Clock
Julian Clock
by Adam Allard
$0.99

This application provides a simple and quick way to view essential time and date information, including Julian Date, running seconds, military date format, day of the week, and ZULU time. Ideal for military and DOD personnel, it offers a convenient tool for constantly checking Julian Date and Zulu time.

πŸ”§ Utilities
(15)
5
Julianator
Julianator
Julianator
Julian Day of Year Calculator
$0.99
$1.99 | 50% OFF

This app converts dates between Julian Day of Year and Gregorian calendars, allowing users to easily switch between the two formats. With a simple and clean interface, users can convert dates in both directions, view monthly calendars, and access widgets and a Watch app for added convenience.

πŸ”§ Utilities
(48)
6
Julian Calendar
Julian Calendar
Julian Calendar
Date Converter, Day Calculator
$1.99

Access a comprehensive date conversion and day calculation tool with the Julian Calendar application. Easily view various Julian dates, including Short Julian Calendar Date, Julian Date, Modified JD, and more. Experience enhanced functionality with Lock Screen and Home Screen widgets!

πŸ“š Education
(47)
7
365 Days Calendar
365 Days Calendar
365 Days Calendar
Julian & day tracker
$1.99

This date conversion tool allows users to easily switch between Julian and Gregorian dates, track Julian Day Numbers, and manage historical or scientific date references. It provides accurate and efficient support for daily operations in various fields, including astronomy, military operations, and historical research.

πŸ”§ Utilities
(23)
8
JulianCal
JulianCal
JulianCal
Julian Day & Batch Codes
Free
πŸ”§ Utilities
(0)
9
Date and Time Calculator
Date and Time Calculator
Date and Time Calculator
by ε±± ι’Ÿ
Free

Calculate time durations accurately with this tool, whether it's for financial planning or tracking important events. Get precise day-to-day calculations and plan ahead with ease.

πŸ”§ Utilities
(9.1K)
10
Calendar
Calendar
Calendar
by Apple Distribution International
Free

Stay organized and effortlessly manage your schedule with this calendar application. Easily create separate calendars for different aspects of your life, view events across various accounts in one place, and enjoy synchronization across all your devices. Schedule events, receive notifications, and simplify meeting invitations with this all-in-one calendar tool.

πŸ“Š Productivity
(1.5M)
11
Date Converter: Calendars
Date Converter: Calendars
Date Converter: Calendars
Convert dates across calendars
Free

This application allows users to easily convert dates between multiple calendar systems, including Gregorian, Islamic, Coptic, and more. With a user-friendly interface and customizable features, it's perfect for researchers, historians, and anyone working with different calendars, helping them navigate and synchronize dates across cultures with ease.

πŸ”§ Utilities
(65)
12
LSTclock: sidereal time clock
LSTclock: sidereal time clock
LSTclock: sidereal time clock
Local sidereal time clock
Free

This application displays the local sidereal time at a selected location and can also calculate it for a specific date and time. Download the app to sync location data across your iPhone and Apple Watch and start tracking local sidereal time today.

πŸ”§ Utilities
(10)
13
Sky Time
Sky Time
Sky Time
by John Kennedy
Free

This app displays essential astronomy times, including Julian Date and Universal Time, and utilizes your device's location to determine Sidereal Time, making it a handy tool for telescope setup. Download the app to access local, Julian, Local Sidereal, and Universal Time with a night-vision friendly red display and pop-up descriptions.

πŸ” Reference
(17)
14
Quick Family Tree
Quick Family Tree
Quick Family Tree
Easily make it with a tap.
Free

Create detailed and interactive family trees effortlessly with a new smartphone app. Easily add family members, customize relationships, and manage complex family structures with intuitive drag-and-drop features. Available for use offline with no account creation required.

πŸ”§ Utilities
(749)
15
The Date Calculator PRO
The Date Calculator PRO
The Date Calculator PRO
Calculate days between dates
Free

Calculate time between dates or add/subtract time with The Date Calculator PRO. Perfect for calculating due dates and more. Download for free now!

πŸ”§ Utilities
(2.5K)
16
BigDate
BigDate
BigDate
No squinting to see the date
Free
πŸ”§ Utilities
(0)
17
Dates Convert
Dates Convert
Dates Convert
Convert dates in any calendar
Free

Effortlessly convert dates between various calendars and calculate date differences with a simple and intuitive interface. Download now to easily switch between Gregorian, Persian, Islamic, Hebrew, Japanese, and Indian calendars.

πŸ“š Education
(0)
18
Convert Date
Convert Date
Convert Date
by Fahad Alrashidi
Free

This application allows users to convert dates between various calendars and calculate their age, with the added features of storing a history of conversions and sharing results as images. Try converting dates and exploring its features today!

πŸ”§ Utilities
(12)
19
TrumpTime Date Calculator
TrumpTime Date Calculator
TrumpTime Date Calculator
Trump's time in office
Free

Stay up-to-date on Trump's presidency with this date calculator app. Track the days since his inauguration, countdown to milestones, and calculate time periods between dates. Download now for a unique way to follow the Trump administration's timeline.

πŸ”§ Utilities
(799)
20
Love Horoscopes
Love Horoscopes
Love Horoscopes
Horoscope, Astrology & Tarot
Free

Get personalized daily love horoscopes based on your zodiac sign and relationship status. Receive insights and advice on your love life to help navigate your relationships better. Unlock the mysteries of your romantic future today!

🌟 Lifestyle
(893)

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