# JCSys Reference vs CW Nuclear

The clearest difference is update cadence: CW Nuclear at every 3 months against JCSys Reference's every 21 months. JCSys Reference's advantage is rating (4.8 vs 4.4) and review sentiment (100% vs 85%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JCSys Reference holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 5 and 11 respectively. Written reviews point the same way: 100% of JCSys Reference's written reviews are positive against 85% of CW Nuclear's.

JCSys Reference ships an update every 21 months, CW Nuclear every 3 months. The most recent releases landed on June 5, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | JCSys Reference | CW Nuclear |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/jcsys-reference/id584340426/reviews)** | [4.4 (11 ratings)](https://appshunter.io/ios/app/cw-nuclear/id833840892/reviews) |
| Number of ratings | 5 | **11** |
| Positive reviews | **100.0% of reviews** | 84.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 9 MB | 48 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Graeme Watson](https://appshunter.io/developer/574479647) | [Curtiss-Wright](https://appshunter.io/developer/833840895) |

## What reviewers say

### JCSys Reference

[App page](https://appshunter.io/ios/app/jcsys-reference/id584340426)

This application provides a comprehensive reference for Tactical Data Links (TDL) and MODAF. It includes detailed catalogues for Link 11, Link 16, and Link 22 messages, along with network participation group information and an acronym finder.

**Highlights:** Link 11 message catalogue, Link 16 message catalogue, Link 16 NPG list, Link 22 message catalogue, Knowledge test, MODAF View reference, Acronym finder

**Features:** macOS Compatibility

**In-app purchases:** none


### CW Nuclear

[App page](https://appshunter.io/ios/app/cw-nuclear/id833840892)

This app provides a comprehensive directory of global nuclear power plants, detailing owners, operators, reactor types, and key dates. It features a global map for plant location and an advanced search function for easy data retrieval.

**Highlights:** Global nuclear plant directory, Plant owner and operator details, Reactor type information, License renewal and expiration dates, Interactive global map, Advanced search functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is JCSys Reference free?

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

### Is CW Nuclear free?

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

### Which has better reviews, JCSys Reference or CW Nuclear?

JCSys Reference is rated higher. JCSys Reference averages 4.8 out of 5 from 5 ratings, while CW Nuclear averages 4.4 from 11 ratings.

### Do JCSys Reference or CW Nuclear have ads?

Neither JCSys Reference nor CW Nuclear shows ads.

### Which is updated more often, JCSys Reference or CW Nuclear?

JCSys Reference ships an update every 21 months, and CW Nuclear every 3 months. Most recently, JCSys Reference was updated on June 5, 2026 and CW Nuclear on September 7, 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.*