# kWx vs Flash Weather

The clearest difference is in-app purchases: kWx at none against Flash Weather's 2. Flash Weather's advantage is rating (4.4 vs 4.0) and ratings volume (105 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flash Weather sells 2 in-app purchases, starting at $3.99 per month. kWx asks for nothing beyond the download.

Flash Weather holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Flash Weather has 105 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of kWx's written reviews are positive against 65% of Flash Weather's.

kWx ships an update every 4 weeks, Flash Weather fortnightly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | kWx | Flash Weather |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/kwx/id1497992924/reviews) | **[4.4 (105 ratings)](https://appshunter.io/ios/app/flash-weather-future-radar/id6462927563/reviews)** |
| Number of ratings | 2 | **105** |
| Positive reviews | 50.0% of reviews | **64.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | Paid | **Freemium** |
| Best chart rank | — | **#56** |
| Size | 1 MB | 73 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Sean Brennan](https://appshunter.io/developer/898026482) | [Flash Scientific Technology](https://appshunter.io/developer/1703653310) |

## What reviewers say

### kWx

[App page](https://appshunter.io/ios/app/kwx/id1497992924)

Accesses official NOAA weather data directly, minimizing bandwidth and eliminating third-party tracking. View current conditions, 7-day forecasts, and heat index for numerous global locations. Customize station lists and offset forecast locations for precise weather information.

**Highlights:** Direct NOAA data access, 7-day text forecasts, Current conditions and temperature, Customizable station lists, Offset forecast locations, Heat Index display

**Features:** Vision Pro support

**In-app purchases:** none


### Flash Weather

[App page](https://appshunter.io/ios/app/flash-weather-future-radar/id6462927563)

**Currently charting:** #56 Top Free · Weather, #117 Top Grossing · Weather (US App Store)

This app uses advanced algorithms and deep learning to predict lightning strikes before they happen. It provides real-time and future radar, smart push notifications, and heat stress forecasting for outdoor safety. Get hourly and 7-day forecasts for temperature, precipitation, and more.

**Highlights:** Predictive lightning alerts, Live Activities on Lock Screen, Future radar up to 18 hours, Smart push notifications, Heat and WBGT forecasting, 7-day hourly and daily forecasts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flash Premium Monthly | $3.99 | per month |
| Flash Premium Yearly | $39.99 | per year |

**What reviewers like**

- ✨ Incredible accuracy
- ⚡️ Reliable lightning alerts
- 🐶 Useful for pet safety
- 👍 Easy to save multiple locations
- 🐦 Unique bird identification feature (European Starling)

**What reviewers complain about**

- 💸 Too many features locked behind premium
- 🚫 Lightning alerts now premium
- 📉 Metrics (humidity, UV) not appearing
- ⏳ App doesn't always load quickly or at all
- 👎 Subscription required for basic features (multiple locations)

**Reported bugs**

- App doesn't always load quickly or at all
- Lightning feature won't load during storms
- Metrics (humidity, UV) never appear
- Radar not working
- Radar and lightning maps not working

**Requested features**

- Add notifications for advisories/warnings
- Include a lightning counter with trend rate
- Show UV rating, rain possibility, air quality in radar section
- Make more features available without premium
- Fix app crashing issues


## Frequently asked questions

### Is kWx free?

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

### Is Flash Weather free?

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

### Which has better reviews, kWx or Flash Weather?

Flash Weather is rated higher. kWx averages 4.0 out of 5 from 2 ratings, while Flash Weather averages 4.4 from 105 ratings.

### Do kWx or Flash Weather have ads?

Neither kWx nor Flash Weather shows ads.

### Which is updated more often, kWx or Flash Weather?

kWx ships an update every 4 weeks, and Flash Weather fortnightly. Most recently, kWx was updated on November 3, 2026 and Flash Weather on November 7, 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.*