# Thunderstorm Calculator

> Calculate thunderstorm distance using lightning-thunder time intervals. (iPhone/iPad app by Piet Jonas.)

- Source: https://appshunter.io/ios/app/thunderstorm-calculator/id389042852 (this page in markdown: same URL + `.md`)
- Developer: [Piet Jonas](https://appshunter.io/developer/288060167)
- Category: Weather, Travel
- Price: $0.99
- Rating: 3.00/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 15.6 · 18 MB
- Languages: American English
- Released: 2010-08-30
- Data updated: 2026-09-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/thunderstorm-calculator/id389042852/reviews.md

## What is Thunderstorm Calculator?

This application calculates the distance of a thunder storm by measuring the time between a lightning and the corresponding thunder.

How to use:
- When you see the lightning press the 'Lightning' button.
- Wait until you hear the thunder and press the 'Thunder' button.
- Tap the distance to toggle between metric and imperial units.
- With the help of the history list you can see whether the storm comes closer and moves away.

Background:
The speed of light is much faster than the speed of sound. By measuring the time between the lightning and corresponding thunder one can easily approach the distance by multiplying the duration with the speed of sound.

Apple Watch version:
- distance calculation
- history list
- metric and imperial units
- has a Check for a quick start

## Key features

- Lightning and thunder timing
- Distance calculation
- Metric and imperial units
- Storm history tracking
- Apple Watch support

## Chart rankings

- #162 in Top Paid · Weather (US App Store)


## Frequently asked questions about Thunderstorm Calculator

### How does Thunderstorm Calculator work?

Thunderstorm Calculator measures the time between seeing lightning and hearing thunder. It then uses the speed of sound to calculate the storm's distance, as light travels much faster than sound.

### What devices does Thunderstorm Calculator support?

Thunderstorm Calculator is available on Apple Watch, iPhone, iPad, and iPod. The Apple Watch version offers core features like distance calculation and history.

### Can I switch between units in Thunderstorm Calculator?

Yes, you can easily toggle between metric and imperial units for distance measurement by tapping the displayed distance within the app.

### Does Thunderstorm Calculator have ads?

No, Thunderstorm Calculator is ad-free. You can use its features without any interruptions from advertisements.

### What is the price of Thunderstorm Calculator?

Thunderstorm Calculator costs $0.99. This is a one-time purchase for the application.

### How often is Thunderstorm Calculator updated?

The latest version, 1.1.2, was released on March 19, 2023. The app was initially released on August 30, 2010, indicating a history of updates.

### What is the age rating for Thunderstorm Calculator?

Thunderstorm Calculator has an age rating of 4+. This indicates it is suitable for children and adults.

### What do users think of Thunderstorm Calculator?

Based on the available data, Thunderstorm Calculator has a rating of 3.0 stars from 3 ratings. This suggests a mixed reception from its user base.

## Version history (last 5 releases)

### 1.1.3 — 2026-07-07

- bug fix

### 1.1.2 — 2023-03-19

- bug fixed

### 1.1.1 — 2020-01-11

- support for iPhone X+

### 1.1.0 — 2016-03-23

- Apple Watch version
- supports the iPad Multitasking (Split screen, ...)
- support for iOS9
- support for the iPhoen 6, 6+ and the iPad Pro

### 1.0.2 — 2014-05-05

- enhanced for iOS7
- more responsive

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| --- | --- | --- | --- |
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## More apps by Piet Jonas

- [Game Counter](https://appshunter.io/ios/app/game-counter/id288060164)
- [Workout](https://appshunter.io/ios/app/workout/id288240647)
- [Compass](https://appshunter.io/ios/app/compass/id288420566)
- [Contact Find](https://appshunter.io/ios/app/contact-find/id290153951)
- [Thesaurus App](https://appshunter.io/ios/app/thesaurus-app/id291362860)
- [Baseball Games](https://appshunter.io/ios/app/baseball-games/id291533429)

All apps by Piet Jonas: https://appshunter.io/developer/288060167

## Related topics

[thunderstorm for nanoleaf](https://appshunter.io/ios/topics/thunderstorm-for-nanoleaf)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*