Julianator vs Julian Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Julianator
Easily convert dates between the Gregorian calendar and the Julian Day of Year (ordinal date). This tool is useful for systems that use day-of-year numbering, such as mainframes, military, and food industries. It offers a clean interface, monthly views, and widgets for quick access.
- Gregorian to Julian Day of Year conversion
- Julian Day of Year to Gregorian conversion
- Monthly calendar view
- Home Screen widgets
- Lock Screen widgets
- Watch app with complications
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This app converts a date between Julian Day of Year and Gregorian. For example, September 11, 2022 converts to 2022-254 and 2022-254 converts to September 11, 2022. This app will convert both directions. Julian Date for this app refers to the day-of-year number (more properly, the ordinal date) in the Gregorian calendar, often used in mainframe computer systems, the military, and the food industry. (Note: this app does not used the term Julian Date to refer to the astronomy definition which is calculated from 4713 BC) Features a simple clean interface with pickers for the dates. The app also features a monthly view allowing a quick view of both Gregorian and Julian days for the entire month. Widgets are available for both the Home Screen and the Lock Screen to display the current day of year. A Watch app is available that includes a date converter and complications to display the current day of year. Note: The app's icon does not change to reflect the current day. Privacy Policy: https://julianator.brightdaydigital.com/privacy Terms of Service: https://julianator.brightdaydigital.com/terms
Julian Clock
This utility app displays the current Julian Date, time with seconds, military date format, day of the week, and Zulu time (GMT). It's designed for quick access to essential timekeeping information.
- Julian Date display
- Real-time clock with seconds
- Military date format
- Day of the week
- ZULU time (GMT)
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It's as simple as it gets, a Julian date and clock app built for people who need the numbers fast. Julian Clock shows everything you need at a glance: • Julian date (YJJJ or YYDDD, your choice in Settings) • Local time with running seconds • Date in military format (e.g. 19JUN26) • Day of the week • Zulu time (GMT) New in version 2 • Home Screen widgets — small and medium layouts with Julian date, Zulu, and military date • Lock Screen widgets — circular, rectangular, and inline at-a-glance views • Apple Watch app — Julian date and Zulu on your wrist, plus complications • iPad support — universal layout for desk and EFB use • Historical lookup — pick any date on the calendar to get its Julian day • Eight themes — Navy, Air Force, Army, Marines, Coast Guard, Space Force, Dark, and Light Widgets and the Watch app stay in sync with your format and theme choices. This app is for military and DOD personnel who constantly need a quick look at the Julian date and/or Zulu time, on the phone, on the lock screen, on the watch, or on an iPad beside the job.
Screenshots
Verdict
The clearest difference is monetization model: Julianator at free against Julian Clock's paid. Julianator also leads on update cadence (every 3 months vs every 69 months) and ratings volume (123 vs 15). Julian Clock's advantage is review sentiment (100% vs 70%) and rating (4.9 vs 4.7). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Julianator costs $0.99 and Julian Clock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Julian Clock holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Julianator has 123 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 70% of Julianator's written reviews are positive against 100% of Julian Clock's.
Julianator ships an update every 3 months, Julian Clock every 69 months. Both last shipped on October 24, 2026.
| Parameter | Julianator | Julian Clock |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.7 (123 ratings) | 4.9 (15 ratings) — better |
| Positive reviews | 70.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 123 — better | 15 |
| Update frequency | Every 3 months — better | Every 69 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 17.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Bright Day Digital LLC | Adam Allard |
Customer experience
Julianator
Julian Clock
In-app purchases
Julianator
No in-app purchases
Julian Clock
No in-app purchases
Questions
Is Julianator free?
Is Julian Clock free?
Which has better reviews, Julianator or Julian Clock?
Do Julianator or Julian Clock have ads?
Which is updated more often, Julianator or Julian Clock?
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