# Flash Boom vs Flash Weather

The clearest difference is rating: Flash Boom at 5.0 against Flash Weather's 4.4. Flash Boom also leads on in-app purchases (none vs 2) and iOS requirement (10.3 vs 15.0). Flash Weather's advantage is ratings volume (105 vs 1) and update cadence (fortnightly vs every 6 weeks). On price, review sentiment, ads and monetization model there is nothing between them.

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

Flash Boom holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Flash Weather has 105 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 60% of Flash Boom's written reviews are positive against 65% of Flash Weather's, so the app with the better star average is not the one people write more warmly about.

Flash Boom ships an update every 6 weeks, Flash Weather fortnightly. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Flash Boom | Flash Weather |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flash-boom/id320959981/reviews)** | [4.4 (105 ratings)](https://appshunter.io/ios/app/flash-weather-future-radar/id6462927563/reviews) |
| Number of ratings | 1 | **105** |
| Positive reviews | 60.0% of reviews | **64.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Best chart rank | — | **#127** |
| Size | 17 MB | 72 MB |
| Requires iOS | **10.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Edward Danley](https://appshunter.io/developer/315123663) | [Flash Scientific Technology](https://appshunter.io/developer/1703653310) |

## What reviewers say

### Flash Boom

[App page](https://appshunter.io/ios/app/flash-boom/id320959981)

This app estimates the distance to lightning strikes by timing the interval between seeing the flash and hearing the thunder. It provides a simple, quick way to gauge your proximity to a storm and advises taking cover if you are within 5 miles.

**Highlights:** Lightning distance estimation, Flash and thunder timing, Distance in miles and kilometers, Safety advisory for close lightning, Simple tap interface

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

**In-app purchases:** none


### Flash Weather

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

**Currently charting:** #127 Top Grossing · Weather (US App Store)

Get precise, AI-powered weather alerts for lightning, heat risk, and radar. Receive instant notifications tailored to your location, with customizable settings for safety and planning outdoor activities. Includes hourly and 7-day forecasts.

**Highlights:** AI lightning prediction, Real-time heat risk metrics, Current and future radar maps, Smart push notifications, Hourly and 7-day forecasts, Customizable warning settings

**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 |


## Frequently asked questions

### Is Flash Boom free?

Flash Boom 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, Flash Boom or Flash Weather?

Flash Boom is rated higher. Flash Boom averages 5.0 out of 5 from 1 ratings, while Flash Weather averages 4.4 from 105 ratings.

### Do Flash Boom or Flash Weather have ads?

Neither Flash Boom nor Flash Weather shows ads.

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

Flash Boom ships an update every 6 weeks, and Flash Weather fortnightly. Most recently, Flash Boom was updated on October 13, 2026 and Flash Weather on October 25, 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.*