Comparison

Julianator vs fivelevel

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Currently charting
Read full description

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

About

fivelevel

This app provides essential tools for aircraft maintainers, including time conversions, date calculations, and reference data. It offers a streamlined experience with no subscriptions or unnecessary features, designed for efficiency on the flightline.

Highlights
  • Zulu & local time display
  • Julian date calendar
  • Preflight due calculator
  • Conversion tools
  • Searchable ICAO codes
  • Apple Watch app
  • Home screen widget
Read full description

5-Level gives aircraft maintainers the tools they actually use — no fluff, no subscriptions, just what you need on the flightline. Features: • Zulu & local time display • Julian date calendar • Preflight due calculator • Conversion tools • Searchable ICAO codes • Apple Watch app with complications • Home screen widget Built by a maintainer who got tired of doing math on the back of a 781.

Screenshots

Julianator4 screens
fivelevel4 screens

Verdict

The call

The clearest difference is price: fivelevel at Free against Julianator's $0.99. fivelevel also leads on rating (5.0 vs 4.7) and update cadence (every 4 weeks vs every 3 months). Julianator's advantage is ratings volume (117 vs 7) and chart position (#183 vs unranked). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

fivelevel is free to download; Julianator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

fivelevel holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Julianator has 117 ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

Julianator ships an update every 3 months, fivelevel every 4 weeks. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

Scorecard6 real differences · 5 level
Julianator versus fivelevel: the parameters behind the verdict, then further details
ParameterJulianatorfivelevel
Price$0.99Free — better
Rating4.7 (117 ratings)5.0 (7 ratings) — better
Positive reviews70.4% of reviews—
Number of ratings117 — better7
Update frequencyEvery 3 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#183 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.413.0 — better
Further details — not scored
Size4 MB25 MB
Age rating4+4+
DeveloperBright Day Digital LLCAdam Moody

Customer experience

Julianator

All ratings117 ratings
Positive94.0%
Neutral0.0%
Negative6.0%
Written reviews27 reviews
Positive70.4%
Neutral11.1%
Negative18.5%

fivelevel

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Julianator

No in-app purchases

None

fivelevel

No in-app purchases

Questions

Is Julianator free?
Julianator costs $0.99, with no in-app purchases.
Is fivelevel free?
fivelevel is free to download, with no in-app purchases.
Which has better reviews, Julianator or fivelevel?
fivelevel is rated higher. Julianator averages 4.7 out of 5 from 117 ratings, while fivelevel averages 5.0 from 7 ratings.
Do Julianator or fivelevel have ads?
Neither Julianator nor fivelevel shows ads.
Which is updated more often, Julianator or fivelevel?
Julianator ships an update every 3 months, and fivelevel every 4 weeks. Most recently, Julianator was updated on October 10, 2026 and fivelevel on October 3, 2026.

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