Julian vs DataOnline Asset Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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. Use the International Fixed Calendar, with 13 months of 28 days, across Julian, widgets, and Apple Watch. Share a personalized image of today's date and year progress.
DataOnline Asset Viewer
Access critical information and manage alerts remotely. This mobile tool allows users to view and acknowledge notifications, alarms, and alerts on their iPhone for quick decision-making.
- View notifications, alerts, and alarms
- Acknowledge critical information
- Remote access to data
- On-the-go functionality
- Quick decision-making support
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As an alternative to our DOLV3 portal, Asset Viewer is ideal for our customers when they are on the go and still require critical information at their fingertips. Notifications, alerts, and alarms can now be viewed and acknowledged on your iPhone, facilitating quick and decisive action where necessary.
Screenshots
Verdict
The clearest difference is rating: Julian at 4.8 against DataOnline Asset Viewer's 2.2. Julian also leads on ratings volume (4.8K vs 5). DataOnline Asset Viewer's advantage is in-app purchases (none vs 3) and review sentiment (100% vs 67%). On price, update cadence, ads 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
Both are free to download. Julian sells 3 one-off in-app purchases. DataOnline Asset Viewer asks for nothing beyond the download.
Julian holds the better App Store score, 4.8 against 2.2. That said, the two scores are not equally well evidenced: Julian has 4.8K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 67% of Julian's written reviews are positive against 100% of DataOnline Asset Viewer's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and October 16, 2026 respectively.
| Parameter | Julian | DataOnline Asset Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4.8K ratings) — better | 2.2 (5 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 4.8K — better | 5 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 19 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Carlos Perez | DataOnline LLC |
Customer experience
Julian
DataOnline Asset Viewer
Bugs and 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
DataOnline Asset Viewer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Julian
- Short Cup$0.99
- Tall Cup$1.99
- Grande Cup$2.99
DataOnline Asset Viewer
No in-app purchases
Questions
Is Julian free?
Is DataOnline Asset Viewer free?
Which has better reviews, Julian or DataOnline Asset Viewer?
Do Julian or DataOnline Asset Viewer have ads?
Which is updated more often, Julian or DataOnline Asset Viewer?
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