# Weather Calc vs Rudecast

The clearest difference is price: Rudecast at Free against Weather Calc's $0.99. Rudecast also leads on update cadence (daily vs every 32 months). Weather Calc's advantage is chart position (#176 vs unranked) and iOS requirement (15.6 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Rudecast is free to download; Weather Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Weather Calc ships an update every 32 months, Rudecast daily. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Weather Calc | Rudecast |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/weather-calc/id305762968/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Daily** |
| Monetization | Paid | — |
| Best chart rank | **#176** | — |
| Size | 4 MB | 2 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Cody Porche](https://appshunter.io/developer/1788057152) |

## What reviewers say

### Weather Calc

[App page](https://appshunter.io/ios/app/weather-calc/id305762968)

**Currently charting:** #176 Top Paid · Weather (US App Store)

This app provides pilots and weather enthusiasts with a comprehensive tool for performing various weather-related calculations. It offers conversions and computations for atmospheric pressure, temperature, humidity, wind speed, and more.

**Highlights:** Altimeter setting calculation, Heat index computation, Pressure unit conversion, Relative humidity calculation, Speed of sound display, Wind chill computation, Wind speed conversion

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

**In-app purchases:** none


### Rudecast

[App page](https://appshunter.io/ios/app/rudecast/id6741375552)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Weather Calc free?

Weather Calc costs $0.99, with no in-app purchases.

### Is Rudecast free?

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

### Do Weather Calc or Rudecast have ads?

Neither Weather Calc nor Rudecast shows ads.

### Which is updated more often, Weather Calc or Rudecast?

Weather Calc ships an update every 32 months, and Rudecast daily. Most recently, Weather Calc was updated on September 14, 2026 and Rudecast on September 21, 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.*