Best Julian Date Calendar Apps

206+ iOS apps curated and reviewed

4.7 avg rating
15 free apps
Updated May 2026

Finding the right julian date calendar app can be overwhelming with so many options. We've analyzed 206+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Julian Date Calendar

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
Julian Calendar#3

Julian Calendar by Applorium Ltd

Date Converter, Day Calculator
Worth Considering
πŸ“š Education
4.7(47 ratings)
$1.99
Julian Calendar screenshot 1
Julian Calendar screenshot 2
Julian Calendar screenshot 3

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!

More Julian Date Calendar apps to explore

4
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)
5
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)
6
Calendar Β·
Calendar Β·
Calendar Β·
Planner Organizer & Agenda
Free

Plan, organize, and manage your schedule effectively with this all-in-one planner and organizer app. Stay on top of your tasks, events, and appointments effortlessly. Download now to boost your productivity!

πŸ“Š Productivity
(59K)
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
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)
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
Clock and Almanac
Clock and Almanac
Clock and Almanac
World Calendar,Public holiday
Free
$4.99 | 100% OFF

Clock and Almanac is a versatile app for global time zones, calendars, festivals, and holidays. Stay connected with friends and family worldwide by easily tracking local times, public holidays, and celestial events. Experience a world of calendars and astronomical insights with just a tap.

🌟 Lifestyle
(159)
11
CalenGoo Calendar
CalenGoo Calendar
CalenGoo Calendar
for Google Calendar and iCloud
$6.99

Access and manage your Google Calendar on iOS devices effortlessly with offline support. Syncs tasks with due dates and integrates Google Tasks seamlessly. Explore more at http:/www.calengoo.com for tutorials and support.

πŸ“Š Productivity
(291)
12
PocketLife Calendar
PocketLife Calendar
PocketLife Calendar
Calendar Organizer & Reminders
Free

PocketLife Calendar is a versatile calendar organizer that helps you stay organized and never miss an important event. Manage your schedule effectively with ease. Download now for effortless event planning!

πŸ“Š Productivity
(41K)
13
CCal 11 Lite
CCal 11 Lite
CCal 11 Lite
Sync with Google Calendarβ„’
Free

Effortlessly sync and organize your schedule with this intelligent calendar app for iPhone and iPod Touch. Enhance your productivity with CCal's sleek interface and seamless Google Calendar integration.

πŸ“Š Productivity
(578)
14
Countdown App Free (Big Day Event Timer Reminder)
Countdown App Free (Big Day Event Timer Reminder)
Countdown App Free (Big Day Event Timer Reminder)
by JINMIN ZHOU
Free

Stay on track with your important events using this Countdown app. Count down to future dates like birthdays and holidays, or reminisce about past special moments. Set reminders, customize backgrounds, and share your joy with others. Download now and never miss a memorable moment!

πŸ”§ Utilities
(1.4K)
15
Calendar Op.2
Calendar Op.2
Calendar Op.2
Handy simple calendar
Free

Calendar Op.2 is a user-friendly calendar app that helps you organize your daily schedule effortlessly. Seamlessly integrates with the iOS calendar and offers a clean interface for easy use. Get organized and stay on top of your tasks with Calendar Op.2!

πŸ“Š Productivity
(13K)
16
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Sync Agenda Tasks & Reminders
Free

Organize your schedule efficiently with a smart planner that synchronizes tasks and events seamlessly. Stay on top of your agenda effortlessly.

πŸ“Š Productivity
(10K)
17
Custom Holiday Calendar
Custom Holiday Calendar
Custom Holiday Calendar
Create Your Own Holidays
Free

An easy-to-use annual calendar app that allows you to view and customize holiday dates, week numbers, and more. Switch between Sunday or Monday as the first day of the week, set custom holidays, and track important dates effortlessly. Try it out now for a streamlined holiday planning experience.

πŸ”§ Utilities
(2K)
18
Notion Calendar
Notion Calendar
Notion Calendar
For your work and life
Free

An advanced calendar app seamlessly integrated with Google Calendar, featuring powerful functionalities like connecting with Notion, multiple time zones, unified view across calendars, widgets, and support for 12 languages. Take control of your time like never before - it's time.

πŸ“Š Productivity
(6.6K)
19
Ethiopian Calendar & Converter
Ethiopian Calendar & Converter
Ethiopian Calendar & Converter
Holiday Fasting Remind Widgets
Free

Experience a convenient tool that showcases the Ethiopian calendar in a user-friendly interface, allowing you to easily access and stay updated on important dates. Embrace cultural traditions and plan ahead efficiently with this essential calendar app.

πŸ“Š Productivity
(3.7K)
20
Ethiopian Calendar
Ethiopian Calendar
Ethiopian Calendar
EtCal
Free

Track Ethiopian calendar dates, holidays, and convert them to the Gregorian calendar easily with this handy app. Stay organized and informed about Ethiopian events seamlessly.

πŸ” Reference
(479)