Julianator vs Julian
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
This app provides a quick and efficient way to view and convert between 11 different types of dates, including standard Julian dates, Mars Sol dates, and Unix time. It features a calendar for easy navigation and allows copying dates to the clipboard. The current date can be displayed on the app icon and Apple Watch complications.
- 11 date type conversions
- Calendar view
- Copy to clipboard
- App icon badge display
- Apple Watch complications
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Julian makes it simple to find any day of the year, convert dates, and understand your year at a glance on iPhone, iPad, and Apple Watch. Browse the calendar to explore past and future dates, or enter a day number to jump straight to the matching date. Choose the date format you prefer and instantly see the day of the year, year progress, days remaining, week number, and current quarter. Convert between calendar dates, ordinal dates, ISO 8601 dates, ISO week dates, Julian calendar dates, Julian Day Numbers, and Unix timestamps. Add or subtract days, weeks, months, or years, or calculate the exact time between two dates. Julian supports a wide range of astronomical and time counting systems, including CCSDS Julian Date, CNES Julian Date, Dublin Julian Date, Lilian Date, Mars Sol Date, Modified Julian Date, Rata Die, Reduced Julian Date, Truncated Julian Date, and Unix Time. Copy any date value with a tap, or copy and share a complete date summary. Save your favorite formats for fast access whenever you need them. Keep important date information visible with Home Screen and Lock Screen widgets. Customize their layout, colors, and content. Larger widgets can show additional date values and calendar views without opening the app. On Apple Watch, quickly view yesterday, today, and tomorrow, look up any day of the year, and choose complications that match your watch face. Use Siri to retrieve date values and check your year progress. Add Julian actions to Shortcuts to convert dates, perform calculations, copy results, and open detailed date information. Personalize Julian with seven color themes, alternate app icons, and System, Light, or Dark appearance. Set your preferred first day of the week and choose which month begins your first quarter. For an instant glance, enable the optional app icon badge to show the current day of the year. Badge updates are silent and do not create banners or sounds. Notification permission is required.
Screenshots
Verdict
The clearest difference is price: Julian at Free against Julianator's $0.99. Julian also leads on ratings volume (4.6K vs 117). Julianator's advantage is in-app purchases (none vs 3) and chart position (#183 vs unranked). On rating, review sentiment, update cadence and ads 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
Julian is free to download; Julianator costs $0.99 up front. Julian sells 3 one-off in-app purchases. Julianator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Julianator against 4.8 for Julian. That said, the two scores are not equally well evidenced: Julian has 4.6K ratings behind it against 117, so its average is the more settled of the two. Written reviews are what separate them: 70% of Julianator's written reviews are positive against 65% of Julian's.
Julianator ships an update every 3 months, Julian every 2 months. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.
| Parameter | Julianator | Julian |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (117 ratings) | 4.8 (4.6K ratings) — better |
| Positive reviews | 70.4% of reviews — better | 65.4% of reviews |
| Number of ratings | 117 | 4.6K — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #183 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 17.4 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Bright Day Digital LLC | Juan Carlos Perez |
Customer experience
Julianator
Julian
Bugs and requests
Julianator
Not enough reviews yet to summarise bugs or requests.
Julian
Reported bugs
3 issues- Complication not updating correctly on Apple Watch
- Date displayed incorrectly, one day behind
- App not functioning properly after updates
Requested features
4 requests- Display current date along with Julian date
- Add countdown/days remaining functionality
- Display week number
- Show Julian date on app icon
In-app purchases
Julianator
No in-app purchases
Julian
- Short Cup$0.99
- Tall Cup$1.99
- Grande Cup$2.99






