# Decoder for US Navy vs Naval Library & Modern Warship

The clearest difference is in-app purchases: Decoder for US Navy at none against Naval Library & Modern Warship's 3. Decoder for US Navy also leads on ratings volume (176 vs 26). Naval Library & Modern Warship's advantage is update cadence (monthly vs every 3 months) and review sentiment (71% vs 63%). On price, rating, ads and device support there is nothing between them.

Both are free to download. Naval Library & Modern Warship sells 3 in-app purchases, starting at $3.99 per 7 days. Decoder for US Navy asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Decoder for US Navy against 4.8 for Naval Library & Modern Warship. That said, the two scores are not equally well evidenced: Decoder for US Navy has 176 ratings behind it against 26, so its average is the more settled of the two. Written reviews are what separate them: 63% of Decoder for US Navy's written reviews are positive against 71% of Naval Library & Modern Warship's.

Decoder for US Navy ships an update every 3 months, Naval Library & Modern Warship monthly. Both last shipped on October 29, 2026.

## The numbers

| Metric | Decoder for US Navy | Naval Library & Modern Warship |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (176 ratings)](https://appshunter.io/ios/app/decoder-for-us-navy/id588227679/reviews) | **[4.8 (26 ratings)](https://appshunter.io/ios/app/naval-library-and-modern-warship/id1479593323/reviews)** |
| Number of ratings | **176** | 26 |
| Positive reviews | 62.5% of reviews | **71.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Freemium |
| Size | 68 MB | 94 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Crash Test Dummy Limited, LLC](https://appshunter.io/developer/588227682) | [MAVI LLC](https://appshunter.io/developer/1699054591) |

## What reviewers say

### Decoder for US Navy

[App page](https://appshunter.io/ios/app/decoder-for-us-navy/id588227679)

This app serves as a rapid reference for US Navy personnel and other codes, streamlining the lookup process for manning documents. It decodes various designations, ratings, and codes to provide quick answers without extensive searching.

**Highlights:** Personnel code reference, Quick lookup tool, Manning document decoding, Additional Qualification Designations, Enlisted Rating Codes, Officer Billet Codes, NECs

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

**In-app purchases:** none


### Naval Library & Modern Warship

[App page](https://appshunter.io/ios/app/naval-library-and-modern-warship/id1479593323)

Access comprehensive data on global navies, including warships, aircraft, and equipment. Enhance situational awareness with detailed specifications, operational status, and multimedia resources. Ideal for defense industry professionals and enthusiasts seeking in-depth naval intelligence.

**Highlights:** Naval vehicle specifications, Operational status tracking, Multimedia resources (photos, videos), Defense industry data, Interactive infographics, Naval quiz feature, Offline access (Pro)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription. | $3.99 | per 7 days |
| Monthly Subscription. | $6.99 | per month |
| Annual Subscription | $29.99 | per year |


## Frequently asked questions

### Is Decoder for US Navy free?

Decoder for US Navy is free to download, with no in-app purchases.

### Is Naval Library & Modern Warship free?

Naval Library & Modern Warship is free to download, with in-app purchases available.

### Which has better reviews, Decoder for US Navy or Naval Library & Modern Warship?

Naval Library & Modern Warship is rated higher. Decoder for US Navy averages 4.8 out of 5 from 176 ratings, while Naval Library & Modern Warship averages 4.8 from 26 ratings.

### Do Decoder for US Navy or Naval Library & Modern Warship have ads?

Neither Decoder for US Navy nor Naval Library & Modern Warship shows ads.

### Which is updated more often, Decoder for US Navy or Naval Library & Modern Warship?

Decoder for US Navy ships an update every 3 months, and Naval Library & Modern Warship monthly. Most recently, Decoder for US Navy was updated on October 29, 2026 and Naval Library & Modern Warship on October 29, 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.*