# Sztorm Appka vs OP Testy

The clearest difference is in-app purchases: Sztorm Appka at none against OP Testy's 4. Sztorm Appka also leads on device support (3 vs 1). OP Testy's advantage is update cadence (every 4 days vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. OP Testy sells 4 in-app purchases, starting at $24.99 per month. Sztorm Appka asks for nothing beyond the download.

Sztorm Appka ships an update every 2 months, OP Testy every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sztorm Appka | OP Testy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 83 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sztorm Grupa](https://appshunter.io/developer/1713953323) | [Michal Mucha](https://appshunter.io/developer/1896665645) |

## What reviewers say

### Sztorm Appka

[App page](https://appshunter.io/ios/app/sztorm-appka/id6479297724)

Learn sailing from scratch with engaging graphics, video lessons, and interactive quizzes. Prepare for sailing and motorboat license exams with dedicated paid modules. Regular updates ensure fresh content and exclusive offers.

**Highlights:** Video lessons on sailing concepts and maneuvers, Interactive quizzes to test knowledge, Graphics explaining yacht construction and maneuvers, Animations for step-by-step sailing maneuvers, Definitions of sailing terms, Preparation tests for sailing and motorboat licenses

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

**In-app purchases:** none


### OP Testy

[App page](https://appshunter.io/ios/app/op-testy/id6806012370)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OP Testy Miesiąc | $24.99 | per month |
| OP Testy Premium | $69.99 | per year |
| 3 Testy | $6.99 | one-time |
| 10 Testów | $12.99 | one-time |


## Frequently asked questions

### Is Sztorm Appka free?

Sztorm Appka is free to download, with no in-app purchases.

### Is OP Testy free?

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

### Do Sztorm Appka or OP Testy have ads?

Neither Sztorm Appka nor OP Testy shows ads.

### Which is updated more often, Sztorm Appka or OP Testy?

Sztorm Appka ships an update every 2 months, and OP Testy every 4 days. Most recently, Sztorm Appka was updated on October 24, 2026 and OP Testy on October 24, 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.*