# Humidity Window vs Drying Day

The clearest difference is ads: Humidity Window at none against Drying Day's shown. Drying Day's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Humidity Window sells 3 in-app purchases, starting at $0.99 per year and Drying Day sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Humidity Window ships an update every 2 weeks, Drying Day fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Humidity Window | Drying Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (17 ratings)](https://appshunter.io/ios/app/humidity-window-stoluften/id6742206262/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 83 MB | 26 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tiago Mendes](https://appshunter.io/developer/1235886918) | [I OSTAPENKO & Y OSTAPENKO](https://appshunter.io/developer/6799116433) |

## What reviewers say

### Humidity Window

[App page](https://appshunter.io/ios/app/humidity-window-stoluften/id6742206262)

This app acts as a digital hygrometer, tracking outdoor humidity and providing personalized advice on when to ventilate your home. It helps prevent mold growth and improve indoor air quality by suggesting optimal times to open windows. Monitor key weather metrics and receive instant updates via a home widget.

**Highlights:** Outdoor humidity tracking (relative & absolute), Dew point comfort visualization, Personalized ventilation advice, Detailed weather metrics (wind, temp, pressure), Home screen widget for instant updates, Lightweight and privacy-focused design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Drop in the Bucket | $0.99 | per year |
| Splash of Support | $2.99 | per year |
| Monsoon of Love | $6.99 | per year |


### Drying Day

[App page](https://appshunter.io/ios/app/drying-day/id6802211157)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Humidity Window free?

Humidity Window is free to download, with in-app purchases available.

### Is Drying Day free?

Drying Day is free to download, with in-app purchases available.

### Do Humidity Window or Drying Day have ads?

Drying Day shows ads; Humidity Window does not.

### Which is updated more often, Humidity Window or Drying Day?

Humidity Window ships an update every 2 weeks, and Drying Day fortnightly. Most recently, Humidity Window was updated on October 25, 2026 and Drying Day on October 25, 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.*