# SOLAS4 vs IALA System

The clearest difference is price: IALA System at $0.99 against SOLAS4's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

SOLAS4 costs $1.99 and IALA System $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | SOLAS4 | IALA System |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | — | Paid |
| Size | 69 MB | 84 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OLEKSANDR IZERGIN](https://appshunter.io/developer/1678396126) | [Oleksandr Kuzmychov](https://appshunter.io/developer/1623095994) |

## What reviewers say

### SOLAS4

[App page](https://appshunter.io/ios/app/solas4/id6468890931)

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

**In-app purchases:** none


### IALA System

[App page](https://appshunter.io/ios/app/iala-system/id6472812615)

Learn maritime navigation with detailed illustrations and explanations of the IALA System. Features an interactive quiz to test your knowledge and track progress. Ideal for both beginners and experienced mariners seeking to deepen their understanding.

**Highlights:** Detailed IALA System explanations, Vivid illustrations, User-friendly interface, Interactive True/False quiz, Progress tracking, Suitable for all experience levels

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

**In-app purchases:** none


## Frequently asked questions

### Is SOLAS4 free?

SOLAS4 costs $1.99, with no in-app purchases.

### Is IALA System free?

IALA System costs $0.99, with no in-app purchases.

### Do SOLAS4 or IALA System have ads?

Neither SOLAS4 nor IALA System 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.*