# Lightning Distance vs Ampero

The clearest difference is in-app purchases: Lightning Distance at none against Ampero's 3. Lightning Distance also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Ampero sells 3 in-app purchases, starting at $4.99 per month. Lightning Distance asks for nothing beyond the download.

Lightning Distance ships an update weekly, Ampero every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Lightning Distance | Ampero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/lightning-distance/id6443976775/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free | — |
| Size | 2 MB | 38 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Daelin Campleman](https://appshunter.io/developer/1441873704) | [Kaan Bas](https://appshunter.io/developer/1868704749) |

## What reviewers say

### Lightning Distance

[App page](https://appshunter.io/ios/app/lightning-distance/id6443976775)

Calculate the distance to lightning by timing the interval between seeing the flash and hearing the thunder. This utility helps you gauge storm proximity and movement.

**Highlights:** Lightning distance calculation, Storm proximity estimation, Storm movement tracking, Simple user interface

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

**In-app purchases:** none


### Ampero

[App page](https://appshunter.io/ios/app/ampero-electrical-calculator/id6762403931)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Picaify Yearly Credits | $29.99 | per year |
| Ampero – Electrical Calc | $119.99 | one-time |


## Frequently asked questions

### Is Lightning Distance free?

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

### Is Ampero free?

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

### Do Lightning Distance or Ampero have ads?

Ampero shows ads; Lightning Distance does not.

### Which is updated more often, Lightning Distance or Ampero?

Lightning Distance ships an update weekly, and Ampero every 2 months. Most recently, Lightning Distance was updated on October 24, 2026 and Ampero 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.*