# Weather4D Lite vs Forecast Alarm

The clearest difference is price: Forecast Alarm at Free against Weather4D Lite's $17.99. Forecast Alarm also leads on review sentiment (100% vs 68%) and update cadence (every 6 days vs every 2 months). Weather4D Lite's advantage is chart position (#144 vs unranked) and iOS requirement (13.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

Forecast Alarm is free to download; Weather4D Lite costs $17.99 up front. Weather4D Lite sells 2 one-off in-app purchases and Forecast Alarm sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Weather4D Lite ships an update every 2 months, Forecast Alarm every 6 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Weather4D Lite | Forecast Alarm |
| --- | --- | --- |
| Price | $17.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/weather4d-lite/id418723845/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 68.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#144** | — |
| Size | 484 MB | 54 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [APP4NAV](https://appshunter.io/developer/418723848) | [Inia](https://appshunter.io/developer/1188753478) |

## What reviewers say

### Weather4D Lite

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

**Currently charting:** #144 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 |


### Forecast Alarm

[App page](https://appshunter.io/ios/app/forecast-alarm/id6446201122)

Receive alerts for specific wind conditions based on various weather models. Configure notification frequency to stay informed about upcoming weather events.

**Highlights:** Wind threshold notifications, Customizable notification frequency, Supports multiple weather models (Arpège, Arome, GFS, ECMWF, Icon, etc.), Monitors weather forecasts, User-friendly interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement Large Mensuel | $5.99 | per month |
| Abonnement Large Plus Hebdomadaire | $8.99 | per 7 days |
| Annual Subscription | $12.99 | per year |
| Abonnement Large Annuel | $17.99 | per year |


## Frequently asked questions

### Is Weather4D Lite free?

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

### Is Forecast Alarm free?

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

### Do Weather4D Lite or Forecast Alarm have ads?

Neither Weather4D Lite nor Forecast Alarm shows ads.

### Which is updated more often, Weather4D Lite or Forecast Alarm?

Weather4D Lite ships an update every 2 months, and Forecast Alarm every 6 days. Most recently, Weather4D Lite was updated on November 6, 2026 and Forecast Alarm on November 3, 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.*