app4sail vs Marine Radar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
app4sail
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Nautical navigation app. uses free S57 vector charts Not everywhere in the world those maps are available and not all of the available maps are implemented at this moment. Instead you can use maps of the project 'Openstreetmap'
Marine Radar
View and control radar images from a compatible wireless radar sensor on your iOS device. This app aids in navigation by displaying radar data, but is not a substitute for fundamental navigation skills.
- View radar images on iOS devices
- Control radar images
- Connects to Furuno Wireless Radar Sensor DRS4W
- Aids in voyage
- Requires compatible Furuno hardware
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Descriptions: This Marine Radar App, in connection with the Furuno Wireless Radar Sensor DRS4W, enables to view and control Radar images on iOS devices. How to use: Get the Marine Radar App installed on your device. Connect your device to the DRS4W and launch the app to view the Radar images. For detailed setup and operation procedures, see the operation manual enclosed with the DRS4W. NOTE: This application is aimed for the help of the voyage. Electronic aids are not a replacement for basic navigation principles and common sense. NOTE for use in Japan: This application can be used only in situations where GP-1x71F of FURUNO Chart Plotter is equipped at the same time.
Screenshots
Verdict
The clearest difference is price: Marine Radar at Free against app4sail's $4.99. Marine Radar also leads on iOS requirement (8.0 vs 15.6). app4sail's advantage is update cadence (every 3 months vs every 11 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Marine Radar is free to download; app4sail costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
app4sail ships an update every 3 months, Marine Radar every 11 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | app4sail | Marine Radar |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 2.7 (12 ratings) — better |
| Positive reviews | — | 30.8% of reviews |
| Number of ratings | — | 12 — better |
| Update frequency | Every 3 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | anton van oosten | 株式会社フルノソフテック |
In-app purchases
app4sail
No in-app purchases
Marine Radar
No in-app purchases
