# Thunderstorm Calculator vs CroForecast

The clearest difference is rating: CroForecast at 5.0 against Thunderstorm Calculator's 3.0. CroForecast also leads on update cadence (every 2 months vs every 33 months). Thunderstorm Calculator's advantage is chart position (#155 vs unranked) and price ($0.99 vs $2.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Thunderstorm Calculator costs $0.99 and CroForecast $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CroForecast holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Thunderstorm Calculator ships an update every 33 months, CroForecast every 2 months. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Thunderstorm Calculator | CroForecast |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | [3.0 (3 ratings)](https://appshunter.io/ios/app/thunderstorm-calculator/id389042852/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/croforecast/id433372825/reviews)** |
| Number of ratings | **3** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Best chart rank | **#155** | — |
| Size | 18 MB | 3 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [DC](https://appshunter.io/developer/375670729) |

## What reviewers say

### Thunderstorm Calculator

[App page](https://appshunter.io/ios/app/thunderstorm-calculator/id389042852)

**Currently charting:** #155 Top Paid · Weather (US App Store)

Measure the distance to a thunderstorm by timing the interval between lightning and thunder. View your storm history to track its movement and toggle between metric and imperial units.

**Highlights:** Lightning and thunder timing, Distance calculation, Metric and imperial units, Storm history tracking, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### CroForecast

[App page](https://appshunter.io/ios/app/croforecast/id433372825)

Provides accurate weather forecasts for Croatia using clear, map-based visuals. See temperature, clouds, rain, wind, sea temperature, and UV index at a glance. Data is sourced from the Croatian National Meteorology Institute.

**Highlights:** Map-based weather visualization, Accurate Croatia forecasts, Temperature, clouds, rain, wind data, Sea temperature and UV index, Clear and simple presentation, Croatian National Meteorology Institute data

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

**In-app purchases:** none


## Frequently asked questions

### Is Thunderstorm Calculator free?

Thunderstorm Calculator costs $0.99, with no in-app purchases.

### Is CroForecast free?

CroForecast costs $2.99, with no in-app purchases.

### Which has better reviews, Thunderstorm Calculator or CroForecast?

CroForecast is rated higher. Thunderstorm Calculator averages 3.0 out of 5 from 3 ratings, while CroForecast averages 5.0 from 2 ratings.

### Do Thunderstorm Calculator or CroForecast have ads?

Neither Thunderstorm Calculator nor CroForecast shows ads.

### Which is updated more often, Thunderstorm Calculator or CroForecast?

Thunderstorm Calculator ships an update every 33 months, and CroForecast every 2 months. Most recently, Thunderstorm Calculator was updated on October 18, 2026 and CroForecast 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.*