# Sztorm Appka vs NIDU

The clearest difference is update cadence: NIDU at every 3 days against Sztorm Appka's every 2 months. Sztorm Appka's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sztorm Appka ships an update every 2 months, NIDU every 3 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sztorm Appka | NIDU |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 69.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 3 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sztorm Grupa](https://appshunter.io/developer/1713953323) | [Julia Nikitina](https://appshunter.io/developer/1522068003) |

## 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


### NIDU

[App page](https://appshunter.io/ios/app/nidu/id6798823464)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sztorm Appka free?

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

### Is NIDU free?

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

### Do Sztorm Appka or NIDU have ads?

Neither Sztorm Appka nor NIDU shows ads.

### Which is updated more often, Sztorm Appka or NIDU?

Sztorm Appka ships an update every 2 months, and NIDU every 3 days. Most recently, Sztorm Appka was updated on October 24, 2026 and NIDU on October 10, 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.*