# CAISI vs Julian Clock

The clearest difference is review sentiment: Julian Clock at 100% against CAISI's 0%. Julian Clock also leads on rating (4.9 vs 4.1) and chart position (#135 vs unranked). CAISI's advantage is price (Free vs $0.99) and update cadence (every 26 months vs every 69 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

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

Julian Clock holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 7 and 15 respectively. Written reviews point the same way: 0% of CAISI's written reviews are positive against 100% of Julian Clock's.

CAISI ships an update every 26 months, Julian Clock every 69 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CAISI | Julian Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.1 (7 ratings)](https://appshunter.io/ios/app/caisi-vsat/id726652583/reviews) | **[4.9 (15 ratings)](https://appshunter.io/ios/app/julian-clock/id959214765/reviews)** |
| Number of ratings | 7 | **15** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 26 months** | Every 69 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#135** |
| Size | 30 MB | 4 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) | [Adam Allard](https://appshunter.io/developer/959214764) |

## 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 Clock

[App page](https://appshunter.io/ios/app/julian-clock/id959214765)

**Currently charting:** #135 Top Paid · Utilities (US App Store)

This utility app displays the current Julian Date, time with seconds, military date format, day of the week, and Zulu time (GMT). It's designed for quick access to essential timekeeping information.

**Highlights:** Julian Date display, Real-time clock with seconds, Military date format, Day of the week, ZULU time (GMT)

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

**In-app purchases:** none


## Frequently asked questions

### Is CAISI free?

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

### Is Julian Clock free?

Julian Clock costs $0.99, with no in-app purchases.

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

Julian Clock is rated higher. CAISI averages 4.1 out of 5 from 7 ratings, while Julian Clock averages 4.9 from 15 ratings.

### Do CAISI or Julian Clock have ads?

Neither CAISI nor Julian Clock shows ads.

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

CAISI ships an update every 26 months, and Julian Clock every 69 months. Most recently, CAISI was updated on October 6, 2026 and Julian Clock on October 8, 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.*