# Marine Rules of the Road vs RadarPlot

The clearest difference is price: RadarPlot at Free against Marine Rules of the Road's $6.99. RadarPlot also leads on iOS requirement (15.1 vs 17.6). Marine Rules of the Road's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 4 months). On ads and device support there is nothing between them.

RadarPlot is free to download; Marine Rules of the Road costs $6.99 up front. RadarPlot sells 1 one-off in-app purchase. Marine Rules of the Road asks for nothing beyond the download.

Marine Rules of the Road ships an update monthly, RadarPlot every 4 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Marine Rules of the Road | RadarPlot |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 68 MB | 58 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Mattern](https://appshunter.io/developer/1863017911) | [Paulina Praciak](https://appshunter.io/developer/1869727950) |

## What reviewers say

### Marine Rules of the Road

[App page](https://appshunter.io/ios/app/marine-rules-of-the-road/id6757630383)

**In-app purchases:** none


### RadarPlot

[App page](https://appshunter.io/ios/app/radarplot-radar-plot-trainer/id6757932413)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $14.99 | one-time |


## Frequently asked questions

### Is Marine Rules of the Road free?

Marine Rules of the Road costs $6.99, with no in-app purchases.

### Is RadarPlot free?

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

### Do Marine Rules of the Road or RadarPlot have ads?

Neither Marine Rules of the Road nor RadarPlot shows ads.

### Which is updated more often, Marine Rules of the Road or RadarPlot?

Marine Rules of the Road ships an update monthly, and RadarPlot every 4 months. Most recently, Marine Rules of the Road was updated on October 31, 2026 and RadarPlot on October 31, 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.*