# Storm Distance Tracker vs BlitzRechner

The clearest difference is ads: BlitzRechner at none against Storm Distance Tracker's shown. BlitzRechner also leads on update cadence (every 4 weeks vs every 7 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Storm Distance Tracker sells 4 one-off in-app purchases and BlitzRechner sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Storm Distance Tracker ships an update every 7 months, BlitzRechner every 4 weeks. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Storm Distance Tracker | BlitzRechner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (101 ratings)](https://appshunter.io/ios/app/storm-distance-tracker/id1123064491/reviews)** | — |
| Number of ratings | **101** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 2 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [DOUBLE U s.r.o.](https://appshunter.io/developer/331787042) | [Christopher Fuchs](https://appshunter.io/developer/1654565548) |

## What reviewers say

### 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 |


### BlitzRechner

[App page](https://appshunter.io/ios/app/blitzrechner/id6446580439)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brötchen | $1.99 | one-time |
| Pommes | $3.99 | one-time |
| Döner | $6.99 | one-time |


## Frequently asked questions

### Is Storm Distance Tracker free?

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

### Is BlitzRechner free?

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

### Do Storm Distance Tracker or BlitzRechner have ads?

Storm Distance Tracker shows ads; BlitzRechner does not.

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

Storm Distance Tracker ships an update every 7 months, and BlitzRechner every 4 weeks. Most recently, Storm Distance Tracker was updated on October 9, 2026 and BlitzRechner on September 29, 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.*