# ClassNK Directory vs KR Directory

The clearest difference is iOS requirement: KR Directory at 11.0 against ClassNK Directory's 15.6. On price, update cadence, 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.

ClassNK Directory ships an update every 10 months, KR Directory every 6 months. The most recent releases landed on September 16, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | ClassNK Directory | KR Directory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/classnk-directory/id956676438/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 15 MB | 24 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION](https://appshunter.io/developer/956676437) | [Korean Register](https://appshunter.io/developer/600805564) |

## What reviewers say

### ClassNK Directory

[App page](https://appshunter.io/ios/app/classnk-directory/id956676438)

Easily find contact details for a global network of survey offices. Search for locations by port, country, or keywords, and view them on Google Maps.

**Highlights:** Worldwide office network access, Contact information for global offices, Search offices by port, country, or keywords, View office locations on Google Maps, Access staff details

**Features:** macOS Compatibility

**In-app purchases:** none


### KR Directory

[App page](https://appshunter.io/ios/app/kr-directory/id1544688577)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ClassNK Directory free?

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

### Is KR Directory free?

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

### Do ClassNK Directory or KR Directory have ads?

Neither ClassNK Directory nor KR Directory shows ads.

### Which is updated more often, ClassNK Directory or KR Directory?

ClassNK Directory ships an update every 10 months, and KR Directory every 6 months. Most recently, ClassNK Directory was updated on September 16, 2026 and KR Directory on May 15, 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.*