# Storm Shield vs CASA Alerts

The clearest difference is rating: Storm Shield at 4.8 against CASA Alerts's 3.5. Storm Shield also leads on update cadence (weekly vs every 2 months) and ratings volume (114K vs 10). CASA Alerts's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Storm Shield sells 7 in-app purchases, starting at $1.99 per 7 days. CASA Alerts asks for nothing beyond the download.

Storm Shield holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: Storm Shield has 114K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 38% of Storm Shield's written reviews are positive against 25% of CASA Alerts's.

Storm Shield ships an update weekly, CASA Alerts every 2 months. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Storm Shield | CASA Alerts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (114K ratings)](https://appshunter.io/ios/app/storm-shield/id526831380/reviews)** | [3.5 (10 ratings)](https://appshunter.io/ios/app/casa-alerts/id1094271600/reviews) |
| Number of ratings | **114K** | 10 |
| Positive reviews | **37.8% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#18** | — |
| Size | 91 MB | 19 MB |
| Requires iOS | 15.0 | **12.3** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mosaic S.r.l.](https://appshunter.io/developer/570748343) | [UMass Amherst](https://appshunter.io/developer/1020814631) |

## What reviewers say

### Storm Shield

[App page](https://appshunter.io/ios/app/storm-shield/id526831380)

**Currently charting:** #18 Top Grossing · Weather (US App Store)

Receive precise, location-based severe weather alerts for tornadoes, hurricanes, floods, and more. Get voice and push notifications, view radar maps, and access forecasts. Optional premium features offer advanced radar imagery and lightning alerts.

**Highlights:** Location-based severe weather alerts, Voice and push notifications, Hi-Def radar map, Today screen widget, Apple Watch alerts, Current conditions and forecasts, Save additional locations

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Weekly with Free Trial | $1.99 | per 7 days |
| Premium Weather | $10.99 | per month |
| Lightning Strikes | $10.99 | per month |
| 30-Day Limited Offer Upgrade | $11.49 | per month |
| Yearly with Free Trial | $29.99 | per year |
| Yearly Subscription | $29.99 | per year |

**What reviewers like**

- 🚀 Fastest weather alerts
- 📡 Accurate radar and forecasts
- 🔔 Customizable alerts and notifications
- 💻 Simple and easy to use interface
- 🗺️ Tracking multiple locations

**What reviewers complain about**

- 💰 Subscription model for advanced features
- 🔇 Loud and disruptive alerts
- 🕰️ Delayed alerts compared to other apps
- 🔍 Difficulty customizing alert locations
- 🔋 High battery consumption

**Reported bugs**

- Inconsistent alert delivery
- Radar map not always showing correct location
- Subscription features not working as expected

**Requested features**

- Ability to read alert details in notifications
- Option to silence alerts during certain times
- More customization for alert types and locations
- Horizontal radar view with manual scrolling
- Integration with smart home devices for alerts


### CASA Alerts

[App page](https://appshunter.io/ios/app/casa-alerts/id1094271600)

This app provides severe weather forecasts and warnings, tailored to user preferences and locations. It also collects feedback through surveys to improve weather information delivery methods.

**Highlights:** Context-aware severe weather forecasts, Hyper-local severe weather alerts, Customizable alert preferences, User feedback surveys, Detailed radar data integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Storm Shield free?

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

### Is CASA Alerts free?

CASA Alerts is free to download, with no in-app purchases.

### Which has better reviews, Storm Shield or CASA Alerts?

Storm Shield is rated higher. Storm Shield averages 4.8 out of 5 from 114K ratings, while CASA Alerts averages 3.5 from 10 ratings.

### Do Storm Shield or CASA Alerts have ads?

Storm Shield shows ads; CASA Alerts does not.

### Which is updated more often, Storm Shield or CASA Alerts?

Storm Shield ships an update weekly, and CASA Alerts every 2 months. Most recently, Storm Shield was updated on October 28, 2026 and CASA Alerts on October 21, 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.*