Humidity Window vs Ventify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Humidity Window
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.
- 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
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Humidity Window is a free digital hygrometer that helps you track outdoor humidity and find the best time to ventilate your home. By lowering your indoor humidity at the right moments, you can prevent mold growth and improve your overall indoor air quality. Whether you’re concerned about dampness, stuffy air, or window condensation, this app gives you the insights you need to keep your living space comfortable and healthy. Features: - Humidity Metrics (Relative & Absolute): See the outdoor relative humidity percentage and calculate the absolute humidity for your home, so you know how much moisture is in the air. - Dew Point Comfort Bar: View the current dew point and see exactly where it falls on a visual comfort bar, from 'Pleasant/Dry' to 'Miserable.' - Ventilation Advice: Get personalized tips on when to open your windows. The app suggests optimal times for ventilation to help you reduce indoor humidity and avoid mold risk. - Detailed Weather: Track more than just moisture. See the current wind speed, wind direction, "feels like" temperature, and barometric pressure (including rising or falling trends). - Home Widget: Add the humidity widget to your Home Screen for instant updates. Monitor humidity and ventilation tips at a glance without opening the app. - Lightweight & Private: This app is under 2 MB and does not collect any personal data. It’s fast, privacy-friendly, and ad-free, so you can use it anytime and anywhere. - Air Quality Integration - HomeKit support With Humidity Window, you no longer have to guess when it’s safe to air out your rooms – you’ll know. Protect your home from mold! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ventify
This app analyzes indoor and outdoor conditions to advise on optimal ventilation for humidity control. It converts relative humidity to absolute values, providing clear recommendations on whether airing out a room is beneficial. Supports HomeKit and automatic weather data retrieval.
- Absolute humidity calculation
- Ventilation recommendations
- HomeKit integration
- Automatic weather data
- Celsius and Fahrenheit support
- Sensor integration
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Ventify helps you find out whether airing out your room will increase or decrease its humidity. Relative humidity depends on temperature and does not reflect the actual amount of water in the air. However, when ventilating, absolute humidity is what matters. That’s why fresh outside air, even with seemingly low relative humidity, can still raise the humidity indoors. Ventify converts relative humidity into absolute values and gives you a clear recommendation on whether ventilating makes sense. Convenient and automatic: Ventify supports HomeKit, current weather data, and both **Celsius and Fahrenheit**. You can select a room with temperature or humidity sensors, so Ventify automatically uses these values. Alternatively, you can define a location from which weather data is automatically retrieved. This way you save manual input and get results even faster.
Screenshots
Verdict
The clearest difference is price: Humidity Window at Free against Ventify's $0.99. Humidity Window also leads on update cadence (every 2 weeks vs every 2 months). Ventify's advantage is in-app purchases (none vs 3). On review sentiment, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Humidity Window is free to download; Ventify costs $0.99 up front. Humidity Window sells 3 in-app purchases, starting at $0.99 per year. Ventify asks for nothing beyond the download.
Humidity Window ships an update every 2 weeks, Ventify every 2 months. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.
| Parameter | Humidity Window | Ventify |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.9 (17 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 17 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 83 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiago Mendes | Johannes Bauer |
Customer experience
Humidity Window
Ventify
In-app purchases
Humidity Window
- Drop in the Bucket$0.991 Year
- Splash of Support$2.991 Year
- Monsoon of Love$6.991 Year
Ventify
No in-app purchases









