# CAISI vs Julian

The clearest difference is review sentiment: Julian at 67% against CAISI's 0%. Julian also leads on rating (4.8 vs 4.1) and update cadence (every 2 months vs every 26 months). CAISI's advantage is in-app purchases (none vs 3) and iOS requirement (8.4 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Julian sells 3 one-off in-app purchases. CAISI asks for nothing beyond the download.

Julian holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Julian has 4.7K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 0% of CAISI's written reviews are positive against 67% of Julian's.

CAISI ships an update every 26 months, Julian every 2 months. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | CAISI | Julian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (7 ratings)](https://appshunter.io/ios/app/caisi-vsat/id726652583/reviews) | **[4.8 (4.7K ratings)](https://appshunter.io/ios/app/julian-quick-dates/id1084251583/reviews)** |
| Number of ratings | 7 | **4.7K** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 19 MB |
| Requires iOS | **8.4** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 9+ | 4+ |
| Developer | [TRADOC Mobile](https://appshunter.io/developer/960437358) | [Juan Carlos Perez](https://appshunter.io/developer/931213788) |

## What reviewers say

### CAISI

[App page](https://appshunter.io/ios/app/caisi-vsat/id726652583)

This mobile guide provides essential technical and functional information for users of Army automated sustainment systems. It ensures users have the necessary data to effectively interface with communications systems, optimizing sustainment functions.

**Highlights:** Optimize communications system interface, Access technical information, Access functional information, Ensure sustainment function continuity, Information for automated sustainment systems

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

**In-app purchases:** none


### Julian

[App page](https://appshunter.io/ios/app/julian-quick-dates/id1084251583)

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.

**Highlights:** 11 date type conversions, Calendar view, Copy to clipboard, App icon badge display, Apple Watch complications

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Short Cup | $0.99 | one-time |
| Tall Cup | $1.99 | one-time |
| Grande Cup | $2.99 | one-time |

**What reviewers like**

- 🚀 Excellent for work/professional use
- 👍 Simple and easy to use
- 👍 Helpful for daily tasks
- 👍 Convenient complication on Apple Watch

**What reviewers complain about**

- 🐛 Complication issues on Apple Watch (not updating, getting stuck)
- 🐛 Date discrepancies between app and complication
- 🐛 App not functioning properly after updates

**Reported bugs**

- Complication not updating correctly on Apple Watch
- Date displayed incorrectly, one day behind
- App not functioning properly after updates

**Requested features**

- Display current date along with Julian date
- Add countdown/days remaining functionality
- Display week number
- Show Julian date on app icon


## Frequently asked questions

### Is CAISI free?

CAISI is free to download, with no in-app purchases.

### Is Julian free?

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

### Which has better reviews, CAISI or Julian?

Julian is rated higher. CAISI averages 4.1 out of 5 from 7 ratings, while Julian averages 4.8 from 4.7K ratings.

### Do CAISI or Julian have ads?

Neither CAISI nor Julian shows ads.

### Which is updated more often, CAISI or Julian?

CAISI ships an update every 26 months, and Julian every 2 months. Most recently, CAISI was updated on October 6, 2026 and Julian on October 21, 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.*