# First Alert 7 vs CBS 21 WX

The clearest difference is rating: First Alert 7 at 4.7 against CBS 21 WX's 3.4. First Alert 7 also leads on ratings volume (2.2K vs 10) and review sentiment (50% vs 40%). CBS 21 WX's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

First Alert 7 holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: First Alert 7 has 2.2K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 50% of First Alert 7's written reviews are positive against 40% of CBS 21 WX's.

First Alert 7 ships an update every 2 months, CBS 21 WX every 3 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | First Alert 7 | CBS 21 WX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/first-alert-7/id511037078/reviews)** | [3.4 (10 ratings)](https://appshunter.io/ios/app/cbs-21-wx/id805677311/reviews) |
| Number of ratings | **2.2K** | 10 |
| Positive reviews | **50.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 242 MB | 242 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gray Television Group, Inc.](https://appshunter.io/developer/416888140) | [Sinclair Broadcast Group, Inc](https://appshunter.io/developer/631472300) |

## What reviewers say

### First Alert 7

[App page](https://appshunter.io/ios/app/first-alert-7/id511037078)

Get hyper-local weather updates with high-resolution radar and satellite imagery. Receive severe weather alerts and detailed forecasts for your favorite locations or current position.

**Highlights:** 250 meter radar, Future radar, High resolution satellite imagery, Current weather updates, Daily and hourly forecasts, Favorite locations, Severe weather alerts

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Good warning
- 👍 Good weather
- 👍 Dependable

**What reviewers complain about**

- 🤬 Waste of space
- 🤔 Not liking it so far
- 🤔 New Weather App for CBS7 First Alert
- 😡 Stop alerting like it's a warning daily at ungodly hours with routine weather!

**Reported bugs**

- Can't get app to show direction of rain clouds
- Was great until two days ago when I updated- now can get nothing???

**Requested features**

- White background for radar map
- Weather almanac with historic highs and lows


### CBS 21 WX

[App page](https://appshunter.io/ios/app/cbs-21-wx/id805677311)

Get hyper-local weather updates with high-resolution radar and future tracking. Access daily and hourly forecasts, severe weather alerts, and save your favorite locations for personalized weather information.

**Highlights:** 250 meter radar resolution, Future radar tracking, High-resolution satellite imagery, Current weather updates, Daily and hourly forecasts, Save favorite locations, Severe weather alerts

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

**In-app purchases:** none


## Frequently asked questions

### Is First Alert 7 free?

First Alert 7 is free to download, with no in-app purchases.

### Is CBS 21 WX free?

CBS 21 WX is free to download, with no in-app purchases.

### Which has better reviews, First Alert 7 or CBS 21 WX?

First Alert 7 is rated higher. First Alert 7 averages 4.7 out of 5 from 2.2K ratings, while CBS 21 WX averages 3.4 from 10 ratings.

### Do First Alert 7 or CBS 21 WX have ads?

First Alert 7 shows ads; CBS 21 WX does not.

### Which is updated more often, First Alert 7 or CBS 21 WX?

First Alert 7 ships an update every 2 months, and CBS 21 WX every 3 months. Most recently, First Alert 7 was updated on November 10, 2026 and CBS 21 WX on November 6, 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.*