# Weather4D Lite vs Avalon Offshore

The clearest difference is price: Weather4D Lite at $17.99 against Avalon Offshore's $35.00. Weather4D Lite also leads on chart position (#137 vs unranked). Avalon Offshore's advantage is update cadence (every 3 weeks vs every 2 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Weather4D Lite costs $17.99 and Avalon Offshore $35.00 up front. Weather4D Lite sells 2 one-off in-app purchases and Avalon Offshore sells 21 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

Weather4D Lite ships an update every 2 months, Avalon Offshore every 3 weeks. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Weather4D Lite | Avalon Offshore |
| --- | --- | --- |
| Price | **$17.99** | $35.00 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/weather4d-lite/id418723845/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 68.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#137** | — |
| Size | 484 MB | 66 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APP4NAV](https://appshunter.io/developer/418723848) | [Avalon Navigation Systems](https://appshunter.io/developer/1802181177) |

## What reviewers say

### Weather4D Lite

[App page](https://appshunter.io/ios/app/weather4d-lite/id418723845)

**Currently charting:** #137 Top Paid · Weather (US App Store)

Visualize complex atmospheric and oceanic data in 3D HD layers. Download and customize GRIB files from various models for detailed weather and sea condition forecasts. Compare different models and data types side-by-side.

**Highlights:** 3D HD weather data layers, Automatic and manual animation, Customizable GRIB file downloads, Split-screen comparison (iPad), Multiple weather and oceanographic models, Location-based forecasting

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months HD Forecast Subscription | $17.99 | one-time |
| 1 Year HD Forecast Subscription | $39.99 | one-time |


### Avalon Offshore

[App page](https://appshunter.io/ios/app/avalon-offshore/id975313021)

This app provides advanced weather routing and navigation for sailors. It offers detailed weather forecasts from numerous models, collision alerts, and route optimization based on boat draft. Compatible with various nautical maps and augmented reality glasses.

**Highlights:** Advanced weather routing, NMEA 0183 and AIS integration, Collision alarm, Regatta start management, 65 automatic weather models, Bathymetric routing, Navionics Boating map compatibility

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

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $39.99 | per year |
| England and Ireland South 2024 | $29.00 | one-time |
| Portugal and Spain North 2024 | $29.00 | one-time |
| East Mediterranean 2024 | $29.00 | one-time |
| Transatlantic Islands 2024 | $29.00 | one-time |
| West Mediterranean 2024 | $29.00 | one-time |
| Benelux and England East 2024 | $29.00 | one-time |
| East Mediterranean 2023 | $39.00 | one-time |
| Benelux and England East 2022 | $39.00 | one-time |
| England and Ireland South 2023 | $39.00 | one-time |
| Transatlantic Islands 2023 | $39.00 | one-time |
| West Mediterranean 2023 | $39.00 | one-time |
| Portugal and Spain North 2023 | $39.00 | one-time |
| UK and Ireland 2024 | $39.00 | one-time |
| UK and Ireland 2023 | $49.00 | one-time |
| France Mediterranee 2023 SHOM | $99.99 | one-time |
| Lesser Antillas 2023 | $99.99 | one-time |
| SHOM 2024 - France Med | $99.99 | one-time |
| Lesser Antillas 2024 | $99.99 | one-time |
| SHOM 2024 - France Manche | $99.99 | one-time |
| SHOM 2024 - France Atlantique | $99.99 | one-time |


## Frequently asked questions

### Is Weather4D Lite free?

Weather4D Lite costs $17.99, and also offers in-app purchases.

### Is Avalon Offshore free?

Avalon Offshore costs $35.00, and also offers in-app purchases.

### Do Weather4D Lite or Avalon Offshore have ads?

Neither Weather4D Lite nor Avalon Offshore shows ads.

### Which is updated more often, Weather4D Lite or Avalon Offshore?

Weather4D Lite ships an update every 2 months, and Avalon Offshore every 3 weeks. Most recently, Weather4D Lite was updated on October 19, 2026 and Avalon Offshore on October 8, 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.*