# Seaskills vs STCW ASD Cert Prep

The clearest difference is device support: Seaskills at 3 against STCW ASD Cert Prep's 1. Seaskills also leads on iOS requirement (15.2 vs 17.2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Seaskills sells 10 one-off in-app purchases and STCW ASD Cert Prep sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Seaskills ships an update every 2 months, STCW ASD Cert Prep every 3 months. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Seaskills | STCW ASD Cert Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 110 MB | 9 MB |
| Requires iOS | **15.2** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MTR BILISIM EGITIM VE DANISMANLIK ANONIM SIRKETI](https://appshunter.io/developer/1180440944) | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) |

## What reviewers say

### Seaskills

[App page](https://appshunter.io/ios/app/seaskills/id6670166687)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Welding Safety and Techniques | $30.00 | one-time |
| Volatile Organic Compounds | $30.00 | one-time |
| 2334 - Surface Preparation | $30.00 | one-time |
| Engine Room Equipment Handling | $45.00 | one-time |
| Cargo Contamination on Tankers | $45.00 | one-time |
| Pumps Operations & Designs | $47.00 | one-time |
| Disposal of Cargo Residues | $55.00 | one-time |
| Calcium Hypochlorite Container | $55.00 | one-time |
| Pilot Transfer Arrangements | $65.00 | one-time |
| Cargo Securin Container Vessel | $74.00 | one-time |


### 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 Seaskills free?

Seaskills is free to download, with in-app purchases available.

### Is STCW ASD Cert Prep free?

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

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

Neither Seaskills nor STCW ASD Cert Prep shows ads.

### Which is updated more often, Seaskills or STCW ASD Cert Prep?

Seaskills ships an update every 2 months, and STCW ASD Cert Prep every 3 months. Most recently, Seaskills was updated on October 19, 2026 and STCW ASD Cert Prep on October 18, 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.*