# Maritime Knowledge vs Marine Survey Assistant

The clearest difference is review sentiment: Maritime Knowledge at 100% against Marine Survey Assistant's 50%. Maritime Knowledge also leads on in-app purchases (none vs 9) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Marine Survey Assistant sells 9 one-off in-app purchases. Maritime Knowledge asks for nothing beyond the download.

Maritime Knowledge ships an update monthly, Marine Survey Assistant every 4 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Maritime Knowledge | Marine Survey Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/marine-survey-assistant/id6475769290/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 40 MB | 143 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MTECH COMMERCE AND BUSINESS SOLUTIONS PRIVATE LIMITED](https://appshunter.io/developer/1141333645) | [Stanislav Soroka](https://appshunter.io/developer/1701402639) |

## What reviewers say

### Maritime Knowledge

[App page](https://appshunter.io/ios/app/maritime-knowledge/id1488568770)

This application offers comprehensive marine education resources, including structured study materials and video lectures from experienced professors. It aims to provide accessible, quality learning for marine students worldwide, saving them time and energy.

**Highlights:** Online study materials, Video lectures, Structured curriculum, Experienced professors, Accessible worldwide, Student-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Marine Survey Assistant

[App page](https://appshunter.io/ios/app/marine-survey-assistant/id6475769290)

This app offers a comprehensive suite of tools and information for marine professionals. It includes various calculators for draft, ballast, oil, and cargo, along with marine news, a port logbook, and video courses. Users can also manage documents and track contracts.

**Highlights:** Draft Survey Calculator, Ballast Calculator, Oil & Cargo Calculators, ETA & Slip Calculators, Unit Converter, Port Log Book, Marine News & Documents

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |
| Squat & UKC Calculator | $5.99 | one-time |
| ME Power Calculator | $6.99 | one-time |
| Draft & GM Calculator | $7.99 | one-time |
| Video Courses | $9.99 | one-time |
| Ballast Calculator | $14.99 | one-time |
| Сargo Trimming Calculator | $14.99 | one-time |
| Oil Calculator | $14.99 | one-time |
| Draft Survey Calculator | $17.99 | one-time |


## Frequently asked questions

### Is Maritime Knowledge free?

Maritime Knowledge is free to download, with no in-app purchases.

### Is Marine Survey Assistant free?

Marine Survey Assistant is free to download, with in-app purchases available.

### Do Maritime Knowledge or Marine Survey Assistant have ads?

Marine Survey Assistant shows ads; Maritime Knowledge does not.

### Which is updated more often, Maritime Knowledge or Marine Survey Assistant?

Maritime Knowledge ships an update monthly, and Marine Survey Assistant every 4 weeks. Most recently, Maritime Knowledge was updated on November 3, 2026 and Marine Survey Assistant on November 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.*