# Shipstructures vs Marine Survey Assistant

The clearest difference is price: Marine Survey Assistant at Free against Shipstructures's $0.99. Shipstructures's advantage is in-app purchases (none vs 9) and ads (none vs shown). On device support there is nothing between them.

Marine Survey Assistant is free to download; Shipstructures costs $0.99 up front. Marine Survey Assistant sells 9 one-off in-app purchases. Shipstructures asks for nothing beyond the download.

## The numbers

| Metric | Shipstructures | Marine Survey Assistant |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/marine-survey-assistant/id6475769290/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Best chart rank | **#194** | — |
| Size | 48 MB | 143 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [OLEKSANDR IZERGIN](https://appshunter.io/developer/1678396126) | [Stanislav Soroka](https://appshunter.io/developer/1701402639) |

## What reviewers say

### Shipstructures

[App page](https://appshunter.io/ios/app/shipstructures/id6451042182)

**Currently charting:** #194 Top Paid · Education (US App Store)

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

**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 Shipstructures free?

Shipstructures costs $0.99, with no in-app purchases.

### Is Marine Survey Assistant free?

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

### Do Shipstructures or Marine Survey Assistant have ads?

Marine Survey Assistant shows ads; Shipstructures does not.

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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.*