# Humidity Window - Stoßlüften — Ventilation & Mold Risk > Digital hygrometer for mold prevention and indoor air quality improvement. (iPhone/iPad app by Tiago Mendes.) - Source: https://appshunter.io/ios/app/humidity-window-stoluften/id6742206262 (this page in markdown: same URL + `.md`) - Developer: [Tiago Mendes](https://appshunter.io/developer/1235886918) - Category: Weather, Utilities - Price: Free with in-app purchases - Rating: 4.90/5 from 16 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 79 MB - Languages: American English, German (Germany) - Released: 2025-02-23 - Data updated: 2026-08-14 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/humidity-window-stoluften/id6742206262/reviews.md ## What is Humidity Window? 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 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/ ## Key features - 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 ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Splash of Support | $2.99 | per year | | Drop in the Bucket | $0.99 | per year | | Monsoon of Love | $6.99 | per year | ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/humidity-window-stoluften/id6742206262/reviews.md ### 4/5 — Na ja *2026-08-05* Der nicht der Realität anpassbare Bezug auf Werte der Apple-Wetter-App ist ein wenig störend. Ansonsten ist dies eine hilfreiche App. ### 5/5 — Sehr zufrieden 😊 *2026-07-22* Ich finde die App super. Sie ist genau richtig für Lüftungsfreaks, wie ich 😅 ### 5/5 — Super Hilfe *2026-07-05* Hat mir in kürzester Zeit geholfen die Luftfeuchtigkeit in meinem Keller in der Griff zu bekommen. Top! ### 4/5 — Praktische App *2026-06-28* Sie hilft, wenn man keine teuren Hygrometer kaufen will, die den Taupunkt anzeigen können. Leider ist Apple Wetter als Datenbasis für uns nicht optimal, da wir in einem Wald wohnen und die Werte für Temperatur und Feuchtigkeit nicht ganz zutreffen. Schön wäre, wenn man nicht nur eigne Werte für Innen, sondern auch für außen eingeben könnte. So könnte ich die Daten meines Außensensors eingeben. ### 5/5 — Super! *2026-06-21* Ich habe zwar jetzt Streit mit dem Nachbar weil er denkt lüften im Sommer ist schlecht. aber besser erklärt gibt es nicht. Wenn er dumm ist sein Problem ! ### 5/5 — Nice humidity wedget *2025-12-18* I often check the outdoor humidity to plan the ventilation on my house. That’s a very nice app with humidity widget, which I could check the humidity very quick. ### 5/5 — Handy app *2025-10-03, version 1.6* Very easy to use. The only problem are the widgets with the clear mode (IOS 26) ### 5/5 — An actually great app! *2025-07-22* I have been doing manual checks/calculations for years to try to figure out the best time to do an outdoor fresh air exchange without bringing the stifling humidity of NC inside. This simple app makes that super easy and I only wish I knew about it sooner. I discovered this app accidentally when looking for a Home Screen widget that would display the outdoor humidity, which it does! This is officially one of my favorite apps of all time and I will be recommending it to friends/family/anyone who cares about indoor air quality. Thank you to the developer for creating this app!!! ### 5/5 — Love this app *2025-07-14* My only nitpick is that the optimal ventilation window section at the top uses the lowest daily outdoor relative humidity rather than lowest daily outdoor absolute humidity to tell you when to open your window. This usually results in it telling me to open my window during the hottest hours of the day when the RH is lowest, but the AH may still be higher than other times. The humidity calculator section at the bottom works exactly how I’d want: comparing the outdoor AH to the indoor AH to determine whether you can open the window. I think the humidity window section should highlight the hours in the day with the lowest AH as the most likely opportunities to open the windows. ### 5/5 — Thanks *2025-04-05* Must have for humid Florida. ## Frequently asked questions about Humidity Window ### What is Humidity Window? Humidity Window is a free digital hygrometer that helps you track outdoor humidity and find the best time to ventilate your home. It aims to prevent mold growth and improve indoor air quality by suggesting optimal ventilation times. ### Does Humidity Window have ads? No, Humidity Window is ad-free. The app is designed to be lightweight and privacy-friendly, allowing for uninterrupted use. ### What subscription plans are available for Humidity Window? Humidity Window offers several optional subscription plans: 'Drop in the Bucket' for $0.99/year, 'Splash of Support' for $2.99/year, and 'Monsoon of Love' for $6.99/year. These plans likely offer additional support or features for users. ### How does Humidity Window help prevent mold? By tracking outdoor humidity and providing ventilation advice, the app helps you reduce indoor humidity levels. Lowering indoor moisture is a key factor in preventing mold growth and protecting your home. ### What weather information does Humidity Window provide? Beyond humidity, Humidity Window displays detailed weather information including wind speed, wind direction, 'feels like' temperature, and barometric pressure with trend data. ### Can I see humidity updates without opening the app? Yes, Humidity Window features a home widget that allows you to monitor humidity and ventilation tips at a glance directly from your Home Screen. ### What is the age rating for Humidity Window? Humidity Window has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone and iPad devices. ### How often is Humidity Window updated? The app was last updated on March 22, 2026, indicating recent development and maintenance. The latest version is 1.16. ## Version history (last 5 releases) ### 1.20 — 2026-07-23 Refreshed Design: Replaced all emojis across boards and cards with clean, native SF Symbols for a sleek, professional Apple-design look. Better Notification Integration: Improved cold-start deep-linking when opening the app from push notifications, ensuring your ventilation timer and prompts sync up instantly. ### 1.19 — 2026-06-28 A major upgrade to the Humidity Widget. It's now easier to see the humidity in the air, we're using a glass as a visual representation. The background icons change depending on the weather outside. Thank you for using our app. ### 1.18 — 2026-05-13 You can now reorder the boards on your main screen! Put the metrics you care about most right at the top (Available for subscribers). ### 1.17 — 2026-04-30 In this update, we’ve added a brand new widget featuring an illustration of a house and the weather outside, supporting both day and night themes. ### 1.16 — 2026-03-22 - New Feature: Added a Natural Temperature Control card to show if opening windows will heat or cool your home. - Interactive Charts: Tap and drag on the temperature chart to see exact hourly differences. - UI Improvements: Redesigned the Dew Point Comfort card for clearer indoor vs. outdoor comparisons, plus various layout fixes for a smoother experience. ## Apps similar to Humidity Window | App | Rating | Price | Category | | --- | --- | --- | --- | | [FarmWeather](https://appshunter.io/ios/app/farmweather/id6445936214) | 3.2 (21) | Free | Weather | | [Humidity Checker °](https://appshunter.io/ios/app/humidity-checker/id6741719478) | 4.7 (112) | Free | Weather | | [Wind Forecast App](https://appshunter.io/ios/app/wind-forecast-app/id6747728524) | — | Free | Weather | | [Windometer: Wind Speed Tracker](https://appshunter.io/ios/app/windometer-wind-speed-tracker/id1608854716) | 4.4 (245) | Free | Weather | | [Purple: UV](https://appshunter.io/ios/app/purple-uv/id6739747758) | — | Free | Weather | | [PWS Monitor](https://appshunter.io/ios/app/pws-monitor/id713705929) | 4.7 (718) | Free | Weather | ## More apps by Tiago Mendes - [Voless](https://appshunter.io/ios/app/voless/id1235886919) - [Watt for Smart Devices](https://appshunter.io/ios/app/watt-for-smart-devices/id1465004830) - [Crossbow for AirPlay](https://appshunter.io/ios/app/crossbow-for-airplay/id1511318195) - [Halo OS](https://appshunter.io/ios/app/halo-os/id1578192575) - [GamePod XL - Mini-Games 4 all](https://appshunter.io/ios/app/gamepod-xl-mini-games-4-all/id6443708119) - [90s Screen Saver](https://appshunter.io/ios/app/90s-screen-saver/id6447647529) All apps by Tiago Mendes: https://appshunter.io/developer/1235886918 ## Related topics [indoor humidity app checker](https://appshunter.io/ios/topics/indoor-humidity-app-checker) · [indoor humidity checker](https://appshunter.io/ios/topics/indoor-humidity-checker) · [tiago mendes](https://appshunter.io/ios/topics/tiago-mendes) · [free humidity checker](https://appshunter.io/ios/topics/free-humidity-checker) · [room humidity](https://appshunter.io/ios/topics/room-humidity) · [indoor humidity app](https://appshunter.io/ios/topics/indoor-humidity-app) · [humidity](https://appshunter.io/ios/topics/humidity) · [humidity app](https://appshunter.io/ios/topics/humidity-app) · [free indoor humidity app](https://appshunter.io/ios/topics/free-indoor-humidity-app) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*