# KOil vs Nautical Flags Helper

The clearest difference is ads: KOil at none against Nautical Flags Helper's shown. Nautical Flags Helper's advantage is device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

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

## The numbers

| Metric | KOil | Nautical Flags Helper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nautical-flags-helper/id6670582200/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | — |
| Monetization | — | Ad-supported |
| Size | 40 MB | 35 MB |
| Requires iOS | 16.6 | **15.3** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Khaled Alsalem](https://appshunter.io/developer/1441688302) | [Dmitrii Napolov](https://appshunter.io/developer/1766848960) |

## What reviewers say

### KOil

[App page](https://appshunter.io/ios/app/koil/id1446544213)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nautical Flags Helper

[App page](https://appshunter.io/ios/app/nautical-flags-helper/id6670582200)

Master maritime communication with interactive flashcards and quizzes covering nautical signal flags, semaphore, and Morse code. Learn essential navigation and safety signals based on the International Code of Signals.

**Highlights:** International Code of Signals, Nautical signal flags, Semaphore signals, Morse code, Interactive flashcards, Quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KOil free?

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

### Is Nautical Flags Helper free?

Nautical Flags Helper is free to download, with no in-app purchases.

### Do KOil or Nautical Flags Helper have ads?

Nautical Flags Helper shows ads; KOil does not.

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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.*