# Julianator vs DayNumCalc

The clearest difference is monetization model: Julianator at free against DayNumCalc's paid. Julianator also leads on ratings volume (124 vs 6) and chart position (#149 vs unranked). DayNumCalc's advantage is review sentiment (100% vs 70%) and iOS requirement (15.5 vs 17.4). On price, rating, ads and in-app purchases there is nothing between them.

Julianator costs $0.99 and DayNumCalc $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Julianator against 4.8 for DayNumCalc. That said, the two scores are not equally well evidenced: Julianator has 124 ratings behind it against 6, 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 100% of DayNumCalc's.

Julianator ships an update every 3 months, DayNumCalc every 6 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Julianator | DayNumCalc |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [4.7 (124 ratings)](https://appshunter.io/ios/app/julianator/id383950353/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/daynumcalc/id1633054306/reviews)** |
| Number of ratings | **124** | 6 |
| Positive reviews | 70.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#149** | — |
| Size | 4 MB | 1 MB |
| Requires iOS | 17.4 | **15.5** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bright Day Digital LLC](https://appshunter.io/developer/383950356) | [Mayra M Martinez](https://appshunter.io/developer/1633054308) |

## What reviewers say

### Julianator

[App page](https://appshunter.io/ios/app/julianator/id383950353)

**Currently charting:** #149 Top Paid · Utilities (US App Store)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### DayNumCalc

[App page](https://appshunter.io/ios/app/daynumcalc/id1633054306)

This utility app provides quick access to date calculations, including finding the day number for any date, determining a date from a day number, calculating the difference between two dates, and checking the day of the week. It also offers widgets for convenient access on your home and lock screens.

**Highlights:** Calculate day number from date, Determine date from day number, Calculate days between two dates, Add/subtract days from a date, Check day of the week, Home screen widgets, Today View widgets, Lock screen widgets

**In-app purchases:** none


## Frequently asked questions

### Is Julianator free?

Julianator costs $0.99, with no in-app purchases.

### Is DayNumCalc free?

DayNumCalc costs $0.99, with no in-app purchases.

### Which has better reviews, Julianator or DayNumCalc?

DayNumCalc is rated higher. Julianator averages 4.7 out of 5 from 124 ratings, while DayNumCalc averages 4.8 from 6 ratings.

### Do Julianator or DayNumCalc have ads?

Neither Julianator nor DayNumCalc shows ads.

### Which is updated more often, Julianator or DayNumCalc?

Julianator ships an update every 3 months, and DayNumCalc every 6 months. Most recently, Julianator was updated on October 29, 2026 and DayNumCalc on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*