# NS Docs vs KR PSC ADVISER

The clearest difference is update cadence: KR PSC ADVISER at every 3 months against NS Docs's every 16 months. KR PSC ADVISER also leads on iOS requirement (14.4 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

NS Docs ships an update every 16 months, KR PSC ADVISER every 3 months. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | NS Docs | KR PSC ADVISER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Size | 54 MB | 29 MB |
| Requires iOS | 16.6 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ABS Nautical System LLC](https://appshunter.io/developer/1194431728) | [Korean Register](https://appshunter.io/developer/600805564) |

## What reviewers say

### NS Docs

[App page](https://appshunter.io/ios/app/ns-docs/id1491309568)

**Features:** macOS Compatibility

**In-app purchases:** none


### KR PSC ADVISER

[App page](https://appshunter.io/ios/app/kr-psc-adviser/id1660497283)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NS Docs free?

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

### Is KR PSC ADVISER free?

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

### Do NS Docs or KR PSC ADVISER have ads?

Neither NS Docs nor KR PSC ADVISER shows ads.

### Which is updated more often, NS Docs or KR PSC ADVISER?

NS Docs ships an update every 16 months, and KR PSC ADVISER every 3 months. Most recently, NS Docs was updated on September 30, 2026 and KR PSC ADVISER on October 4, 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.*