# Flash Boom vs Storm Distance Tracker

The clearest difference is rating: Flash Boom at 5.0 against Storm Distance Tracker's 3.7. Flash Boom also leads on in-app purchases (none vs 4) and ads (none vs shown). Storm Distance Tracker's advantage is ratings volume (101 vs 1). On price and device support there is nothing between them.

Both are free to download. Storm Distance Tracker sells 4 one-off in-app purchases. Flash Boom asks for nothing beyond the download.

Flash Boom holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Storm Distance Tracker has 101 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Flash Boom's written reviews are positive against 33% of Storm Distance Tracker's.

Flash Boom ships an update every 6 weeks, Storm Distance Tracker every 7 months. The most recent releases landed on September 27, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Flash Boom | Storm Distance Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flash-boom/id320959981/reviews)** | [3.7 (101 ratings)](https://appshunter.io/ios/app/storm-distance-tracker/id1123064491/reviews) |
| Number of ratings | 1 | **101** |
| Positive reviews | **60.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 31 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) | [DOUBLE U s.r.o.](https://appshunter.io/developer/331787042) |

## 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


### Storm Distance Tracker

[App page](https://appshunter.io/ios/app/storm-distance-tracker/id1123064491)

Measure the distance to a storm by timing the interval between seeing lightning and hearing thunder. This tool uses the difference in the speed of light and sound to provide an estimated distance.

**Highlights:** Calculate storm distance, Uses lightning and thunder timing, Calculates based on speed of light and sound, Simple tap interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Remove Ads | $9.99 | one-time |


## Frequently asked questions

### Is Flash Boom free?

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

### Is Storm Distance Tracker free?

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

### Which has better reviews, Flash Boom or Storm Distance Tracker?

Flash Boom is rated higher. Flash Boom averages 5.0 out of 5 from 1 ratings, while Storm Distance Tracker averages 3.7 from 101 ratings.

### Do Flash Boom or Storm Distance Tracker have ads?

Storm Distance Tracker shows ads; Flash Boom does not.

### Which is updated more often, Flash Boom or Storm Distance Tracker?

Flash Boom ships an update every 6 weeks, and Storm Distance Tracker every 7 months. Most recently, Flash Boom was updated on September 27, 2026 and Storm Distance Tracker on October 9, 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.*