# HumidCalc vs 福岡県PM2.5・大気環境速報

The clearest difference is update cadence: HumidCalc at every 2 weeks against 福岡県PM2.5・大気環境速報's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HumidCalc ships an update every 2 weeks, 福岡県PM2.5・大気環境速報 every 7 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HumidCalc | 福岡県PM2.5・大気環境速報 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/humidcalc/id1135328698/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Monetization | Ad-supported | — |
| Size | 11 MB | 13 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yoshihito sakagami](https://appshunter.io/developer/1112518506) | [NISHI TAKASHI](https://appshunter.io/developer/837194947) |

## What reviewers say

### HumidCalc

[App page](https://appshunter.io/ios/app/humidcalc/id1135328698)

This app calculates various humidity and air property indicators using weather data. It's suitable for general users, engineers, and agricultural applications, offering precise calculations for dew point, relative humidity, and heat stress indices.

**Highlights:** Humidity and air property calculations, Discomfort Index and WBGT calculation, Volumetric Absolute Humidity for influenza prevention, Humidity Deficit (HD) for agriculture, Supports 11 indicators across 15 calculation items, Unit conversion (Celsius/Fahrenheit, SI/Imperial), High-precision calculation engine

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

**In-app purchases:** none


### 福岡県PM2.5・大気環境速報

[App page](https://appshunter.io/ios/app/pm25/id1257641427)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HumidCalc free?

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

### Is 福岡県PM2.5・大気環境速報 free?

福岡県PM2.5・大気環境速報 is free to download, with no in-app purchases.

### Do HumidCalc or 福岡県PM2.5・大気環境速報 have ads?

Both HumidCalc and 福岡県PM2.5・大気環境速報 show ads.

### Which is updated more often, HumidCalc or 福岡県PM2.5・大気環境速報?

HumidCalc ships an update every 2 weeks, and 福岡県PM2.5・大気環境速報 every 7 months. Most recently, HumidCalc was updated on October 29, 2026 and 福岡県PM2.5・大気環境速報 on October 24, 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.*