# Shipstructures vs STCW ASD Cert Prep

The clearest difference is price: STCW ASD Cert Prep at Free against Shipstructures's $0.99. Shipstructures's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

STCW ASD Cert Prep is free to download; Shipstructures costs $0.99 up front. STCW ASD Cert Prep sells 2 in-app purchases, starting at $9.99 per month. Shipstructures asks for nothing beyond the download.

## The numbers

| Metric | Shipstructures | STCW ASD Cert Prep |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 48 MB | 9 MB |
| Requires iOS | **8.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [OLEKSANDR IZERGIN](https://appshunter.io/developer/1678396126) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### Shipstructures

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

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

**In-app purchases:** none


### STCW ASD Cert Prep

[App page](https://appshunter.io/ios/app/stcw-asd-cert-prep/id6740270487)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $9.99 | per month |
| Lifetime version | $24.99 | one-time |


## Frequently asked questions

### Is Shipstructures free?

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

### Is STCW ASD Cert Prep free?

STCW ASD Cert Prep is free to download, with in-app purchases available.

### Do Shipstructures or STCW ASD Cert Prep have ads?

Neither Shipstructures nor STCW ASD Cert Prep shows ads.

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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.*