# Weather Underground vs CoastWarn

The clearest difference is rating: CoastWarn at 5.0 against Weather Underground's 3.9. CoastWarn also leads on ads (none vs shown) and update cadence (every 6 days vs every 2 months). Weather Underground's advantage is ratings volume (32K vs 1) and chart position (#16 vs unranked). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Weather Underground sells 3 in-app purchases, starting at $3.99 per month and CoastWarn sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CoastWarn holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Weather Underground has 32K ratings behind it against 1, so its average is the more settled of the two.

Weather Underground ships an update every 2 months, CoastWarn every 6 days. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Weather Underground | CoastWarn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (32K ratings)](https://appshunter.io/ios/app/weather-underground-local-map/id486154808/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coastwarn/id6798089542/reviews)** |
| Number of ratings | **32K** | 1 |
| Positive reviews | 25.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#16** | — |
| Size | 90 MB | 3 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Weather Underground, LLC](https://appshunter.io/developer/284699897) | [Ryan Dean](https://appshunter.io/developer/1850630498) |

## What reviewers say

### Weather Underground

[App page](https://appshunter.io/ios/app/weather-underground-local-map/id486154808)

**Currently charting:** #16 Top Free · Weather, #22 Top Grossing · Weather (US App Store)

Get hyper-local weather forecasts and severe storm alerts powered by a vast network of personal weather stations. Track current conditions, view interactive radar maps, and receive customizable notifications for upcoming weather events.

**Highlights:** Hyper-local forecasts, Severe weather alerts, Interactive radar maps, Personal weather station data, Hourly/daily forecasts up to 15 days, Air quality and UV index

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WU Premium (Monthly) | $3.99 | per month |
| WU Premium (Yearly) | $19.99 | per year |
| WU Ad-Free for 1 year | $1.99 | one-time |

**What reviewers like**

- 🚀 Accurate forecasts
- 📊 Detailed weather data
- 🌍 Global coverage
- 🌊 Tides and moon phases
- 🚲 Useful for outdoor activities

**What reviewers complain about**

- 🔧 Buggy and crashes frequently
- 🤖 Poor UI design after update
- 💰 Expensive subscription
- 🔍 Difficult to access personal weather station data
- 📉 Declining accuracy and reliability

**Reported bugs**

- Incorrect weather data and forecasts
- Inability to change location
- Disappearing weather station data
- Ads and subscription issues

**Requested features**

- Restore previous app layout and features
- Customizable weather data display
- Improved weather station integration
- Offline mode for weather data


### CoastWarn

[App page](https://appshunter.io/ios/app/coastwarn/id6798089542)

Receive timely alerts for coastal flooding based on your custom water-level thresholds. Monitor NOAA data, get tide charts, and stay informed about potential flood events affecting your property or boat.

**Highlights:** Customizable flood alert thresholds, NOAA water-level monitoring, Tide charts and predictions, Flood expected notifications, Alert history, Station map search

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoastWarn Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Weather Underground free?

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

### Is CoastWarn free?

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

### Which has better reviews, Weather Underground or CoastWarn?

CoastWarn is rated higher. Weather Underground averages 3.9 out of 5 from 32K ratings, while CoastWarn averages 5.0 from 1 ratings.

### Do Weather Underground or CoastWarn have ads?

Weather Underground shows ads; CoastWarn does not.

### Which is updated more often, Weather Underground or CoastWarn?

Weather Underground ships an update every 2 months, and CoastWarn every 6 days. Most recently, Weather Underground was updated on October 18, 2026 and CoastWarn on October 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.*