KR vs Class surveyor
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
KR
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- KR-CON, developed by Korean Register, is a comprehensive IMO Convention Database containing IMO Conventions, Codes, Resolutions and Circulars in English, Korean and Chinese. - KR-CON is a portable electronic database containing a vast array of IMO instruments. It enables users to navigate the maze of IMO instruments swiftly and accurately through a variety of user-friendly functions. Users can browse the contents with the touch of a screen, and identify the regulations applicable to an individual ship simply by inputting its details. An intelligent search function allows specific contents to be found easily and quickly. - Who benefits from KR-CON? Maritime Administrations(PSCO) Shipping Companies and Seafarers Classification Societies Ship-builders Service Suppliers Training Institutes Academic Institutions - IMO approval of the carriage of publications in electronic form The Marine Environment Protection Committee (MEPC) and the Maritime Safety Committee (MSC) have approved MSC-MEPC.2 /Circ.2 which allows vessels to carry electronic media onboard instead of hard copy documents. This means that KR-CON can now be used onboard ship. KR-CON has also been recognized as an electronic version of IMO instruments by the 29 maritime administrations including Republic of Korea, Panama, Marshall Islands, Cyprus, Australia, Liberia, St. Vincent and the Grenadines, Isle of Man, and others.
Class surveyor
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Class surveyor - it's our new assistant app for surveyors, shipowners, UTM operators. Depending of ship age and type - our app will privide you scope of ship inspections and thickness measurements in accordance with IACS Requrements. App include LSA Code and SOLAS requirements for liferafts and lifeboats. Try to use our free app in your marine duties - it will help you!
Screenshots
Verdict
The clearest difference is update cadence: Class surveyor at every 7 months against KR's every 17 months. Class surveyor also leads on iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KR ships an update every 17 months, Class surveyor every 7 months. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.
| Parameter | KR | Class surveyor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 17 months | Every 7 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 โ better |
| Further details โ not scored | ||
| Size | 22 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Korean Register | OLEKSANDR IZERGIN |
In-app purchases
KR
No in-app purchases
Class surveyor
No in-app purchases







