# ForeignSail vs Yachtmaster Theory Prep

The clearest difference is ads: Yachtmaster Theory Prep at none against ForeignSail's shown. ForeignSail's advantage is update cadence (every 5 days vs every 2 months) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ForeignSail sells 1 one-off in-app purchase and Yachtmaster Theory Prep sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ForeignSail ships an update every 5 days, Yachtmaster Theory Prep every 2 months. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ForeignSail | Yachtmaster Theory Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 43 MB | 2 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ronnie Maioli](https://appshunter.io/developer/1896761414) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### ForeignSail

[App page](https://appshunter.io/ios/app/foreignsail/id6770694893)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $5.99 | one-time |


### Yachtmaster Theory Prep

[App page](https://appshunter.io/ios/app/yachtmaster-theory-prep/id6793379825)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is ForeignSail free?

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

### Is Yachtmaster Theory Prep free?

Yachtmaster Theory Prep is free to download, with in-app purchases available.

### Do ForeignSail or Yachtmaster Theory Prep have ads?

ForeignSail shows ads; Yachtmaster Theory Prep does not.

### Which is updated more often, ForeignSail or Yachtmaster Theory Prep?

ForeignSail ships an update every 5 days, and Yachtmaster Theory Prep every 2 months. Most recently, ForeignSail was updated on October 28, 2026 and Yachtmaster Theory Prep on October 29, 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.*