# Bluejacketeer vs Julian Calendar

The clearest difference is review sentiment: Bluejacketeer at 55% against Julian Calendar's 0%. Bluejacketeer also leads on price (Free vs $1.99) and update cadence (fortnightly vs every 5 months). Julian Calendar's advantage is rating (4.6 vs 3.9) and in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Bluejacketeer is free to download; Julian Calendar costs $1.99 up front. Bluejacketeer sells 1 in-app purchase, starting at $24.99 per month. Julian Calendar asks for nothing beyond the download.

Julian Calendar holds the better App Store score, 4.6 against 3.9. That said, the two scores are not equally well evidenced: Bluejacketeer has 389 ratings behind it against 68, so its average is the more settled of the two. Written reviews complicate that: 55% of Bluejacketeer's written reviews are positive against 0% of Julian Calendar's, so the app with the better star average is not the one people write more warmly about.

Bluejacketeer ships an update fortnightly, Julian Calendar every 5 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Bluejacketeer | Julian Calendar |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [3.9 (389 ratings)](https://appshunter.io/ios/app/bluejacketeer/id978794087/reviews) | **[4.6 (68 ratings)](https://appshunter.io/ios/app/julian-calendar/id6478984683/reviews)** |
| Number of ratings | **389** | 68 |
| Positive reviews | **55.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#200** | — |
| Size | 48 MB | 1 MB |
| Requires iOS | 15.1 | **15** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kaplan](https://appshunter.io/developer/426399130) | [Applorium Ltd](https://appshunter.io/developer/1688522804) |

## What reviewers say

### Bluejacketeer

[App page](https://appshunter.io/ios/app/bluejacketeer/id978794087)

**Currently charting:** #200 Top Grossing · Education (US App Store)

This learning system uses spaced repetition to help Sailors study for Navy-Wide Advancement Exams and Rating Knowledge Exams. It offers personalized study plans, practice exams, and access to essential study materials. Study offline or listen to questions and answers on the go.

**Highlights:** Spaced Repetition learning technique, Personalized study plans by subtopic, Practice exams and daily quizzes, Warfare qualifications study materials, Multiple-choice and flashcard modes, Offline study with progress sync, Audio study mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $24.99 | per month |

**What reviewers like**

- 🚀 Efficient study tool
- 👍 User-friendly design
- 💡 Offline study features
- 🚀 Helpful for advancement
- 👍 Responsive customer support

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🐛 Login and sync issues
- 🐛 Outdated study material
- 🐛 Inconsistent app performance
- 🐛 Inability to change ratings

**Reported bugs**

- App freezing and crashing
- Sync issues and data loss
- Login problems for new users
- Incompatibility with certain devices

**Requested features**

- Audio mode for studying
- More up-to-date study content
- Improved offline functionality
- Better rating selection options


### Julian Calendar

[App page](https://appshunter.io/ios/app/julian-calendar/id6478984683)

View various Julian Calendar dates, including short, long, and reduced Julian Dates. Supports Lock Screen and Home Screen widgets for easy access to date conversions and calculations.

**Highlights:** View Short Julian Calendar Date, View Long Julian Calendar Date, View Julian Date, View Reduced JD, View Modified JD, Lock Screen widgets, Home Screen widgets

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bluejacketeer free?

Bluejacketeer is free to download, with in-app purchases available.

### Is Julian Calendar free?

Julian Calendar costs $1.99, with no in-app purchases.

### Which has better reviews, Bluejacketeer or Julian Calendar?

Julian Calendar is rated higher. Bluejacketeer averages 3.9 out of 5 from 389 ratings, while Julian Calendar averages 4.6 from 68 ratings.

### Do Bluejacketeer or Julian Calendar have ads?

Neither Bluejacketeer nor Julian Calendar shows ads.

### Which is updated more often, Bluejacketeer or Julian Calendar?

Bluejacketeer ships an update fortnightly, and Julian Calendar every 5 months. Most recently, Bluejacketeer was updated on November 6, 2026 and Julian Calendar on November 4, 2026.

---

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