# HumidCalc vs 湿度計++

The clearest difference is in-app purchases: HumidCalc at none against 湿度計++'s 4. HumidCalc also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 湿度計++ sells 4 one-off in-app purchases. HumidCalc asks for nothing beyond the download.

HumidCalc ships an update every 2 weeks, 湿度計++ monthly. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | HumidCalc | 湿度計++ |
| --- | --- | --- |
| 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** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Ad-supported | — |
| Size | 11 MB | 62 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [yoshihito sakagami](https://appshunter.io/developer/1112518506) | [hidehiko aihara](https://appshunter.io/developer/1178520609) |

## 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


### 湿度計++

[App page](https://appshunter.io/ios/app/plus-plus/id1633054315)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| アプリケーション開発者への応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


## Frequently asked questions

### Is HumidCalc free?

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

### Is 湿度計++ free?

湿度計++ is free to download, with in-app purchases available.

### Do HumidCalc or 湿度計++ have ads?

Both HumidCalc and 湿度計++ show ads.

### Which is updated more often, HumidCalc or 湿度計++?

HumidCalc ships an update every 2 weeks, and 湿度計++ monthly. Most recently, HumidCalc was updated on October 2, 2026 and 湿度計++ 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.*