# Weather Calc vs Heat Compass

The clearest difference is price: Heat Compass at Free against Weather Calc's $0.99. Heat Compass also leads on update cadence (weekly vs every 32 months). Weather Calc's advantage is chart position (#162 vs unranked) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Heat Compass 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, Heat Compass weekly. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Weather Calc | Heat Compass |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/weather-calc/id305762968/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Weekly** |
| Monetization | Paid | — |
| Best chart rank | **#162** | — |
| Size | 4 MB | 44 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [craig merry](https://appshunter.io/developer/1709539824) |

## What reviewers say

### Weather Calc

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

**Currently charting:** #162 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


### Heat Compass

[App page](https://appshunter.io/ios/app/heat-compass/id6746873620)

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

**In-app purchases:** none


## Frequently asked questions

### Is Weather Calc free?

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

### Is Heat Compass free?

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

### Do Weather Calc or Heat Compass have ads?

Neither Weather Calc nor Heat Compass shows ads.

### Which is updated more often, Weather Calc or Heat Compass?

Weather Calc ships an update every 32 months, and Heat Compass weekly. Most recently, Weather Calc was updated on November 6, 2026 and Heat Compass on October 28, 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.*