# FD Viewer vs Ice Map

The clearest difference is in-app purchases: FD Viewer at none against Ice Map's 2. FD Viewer also leads on update cadence (every 2 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ice Map sells 2 in-app purchases, starting at $2.99 per month. FD Viewer asks for nothing beyond the download.

FD Viewer ships an update every 2 weeks, Ice Map every 4 months. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | FD Viewer | Ice Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fd-viewer/id1550977564/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 6 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Neil Cormia](https://appshunter.io/developer/1056328330) | [雪平 王](https://appshunter.io/developer/1045915049) |

## What reviewers say

### FD Viewer

[App page](https://appshunter.io/ios/app/fd-viewer/id1550977564)

Access and read detailed text weather products from the National Weather Service. This app reformats Area Forecast Discussions into a user-friendly interface, allowing easy navigation through sections and offices.

**Highlights:** Read Area Forecast Discussions (AFDs), View NWS offices on a map, List offices by distance or alphabetically, Paginated section navigation, User-friendly reformatting of weather data

**Features:** macOS Compatibility

**In-app purchases:** none


### Ice Map

[App page](https://appshunter.io/ios/app/ice-map-sailing-forecast/id6753895292)

Access global forecasts for sea ice, water conditions, and wind. Visualize ice cover, temperature, currents, and water levels up to six days in advance. Includes specialized ice imagery for key regions.

**Highlights:** Global sea ice map forecast (6 days), Global sea water map forecast (6 days), Ice images for Great Lakes, Arctic, Antarctic, Global water level map forecast (6 days), Global wind and wave forecast (6 days), PRO features: water physics, level, wind, wave maps

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Annual Pro | $19.99 | per year |


## Frequently asked questions

### Is FD Viewer free?

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

### Is Ice Map free?

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

### Do FD Viewer or Ice Map have ads?

Neither FD Viewer nor Ice Map shows ads.

### Which is updated more often, FD Viewer or Ice Map?

FD Viewer ships an update every 2 weeks, and Ice Map every 4 months. Most recently, FD Viewer was updated on October 7, 2026 and Ice Map on October 18, 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.*