NK vs STCW
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NK
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The NK-SHIPS mobile app is a mobile version of NK-SHIPS, which is a free, internet-based information service for the owners and operators of ClassNK registered ships. Users can access useful information to manage their fleet 24 hours a day via smartphones and tablets. Features - Browse ship particulars of your fleet that have been registered with ClassNK. - Easily monitor the status of surveys/audits, due dates, and expiry dates of certificates for these ships in your fleet anytime, anywhere. * Please note that you need to have a valid NK-SHIPS user account to use this app.
STCW
Access the full text of the STCW Convention, covering general provisions, deck and engine departments, radiocommunication, special training, safety, and watchkeeping. This app provides a comprehensive reference for maritime professionals.
- STCW Convention chapters
- General provisions
- Master and deck department
- Engine department
- Radiocommunication
- Special training requirements
- Emergency, safety, and survival
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STCW Convention chapters Chapter I: General provisions Chapter II: Master and deck department Chapter III: Engine department Chapter IV: Radiocommunication and radio personnel Chapter V: Special training requirements for personnel on certain types of ships Chapter VI: Emergency, occupational safety, medical care and survival functions Chapter VII: Alternative certification Chapter VIII: Watchkeeping
Screenshots
Verdict
The clearest difference is price: NK at Free against STCW's $7.99. NK also leads on update cadence (every 6 months vs every 26 months) and iOS requirement (11.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
NK is free to download; STCW costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NK ships an update every 6 months, STCW every 26 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | NK | STCW |
|---|---|---|
| Price | Free — better | $7.99 |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 6 months — better | Every 26 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 26 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | NIPPON KAIJI KYOKAI GENERAL INCORPORATED FOUNDATION | Sergejs Zeigurs |
In-app purchases
NK
No in-app purchases
STCW
No in-app purchases
