# Ventilate: When to Open — Fresh Air & Fan Guide > Fresh Air & Fan Guide (iPhone/iPad app by Vivace App Studio.) - Source: https://appshunter.io/ios/app/ventilate-when-to-open/id6786653699 (this page in markdown: same URL + `.md`) - Developer: [Vivace App Studio](https://appshunter.io/developer/1795460622) - Category: Lifestyle, Utilities - Price: Free - Age rating: 4+ - Requires: iOS 18.6 · 15 MB - Languages: American English, Dutch, French (France), German (Germany), Italian, European Portuguese, Mexican Spanish - Released: 2026-08-04 - Data updated: 2026-08-29 - User reviews in markdown: https://appshunter.io/ios/app/ventilate-when-to-open/id6786653699/reviews.md ## What is Ventilate? If the last few days have left you drained, sticky, and unsure what to do with your windows, you are not alone. When the heat will not let go, every choice feels heavy: open and let warm air in, or close and trap the warmth you already have? Ventilate is a calm guide for exactly that moment. It looks at your local weather, your indoor temperature, and each window in your home, then tells you when to close, when to open, and where to place a fan so cool air actually reaches you. No lectures, no guilt. Just clear next steps when your head is too foggy to guess. If you have air conditioning, check the windows first. When outdoor air is actually cooler, you can cool the home and run the AC less. Ventilate does not invent a number on your bill. It tells you the moment when air from outside can do the work. Free to use • Per-window advice: close, crack open, open wide, or fan placement • Timing that follows the weather, not the clock • Cool with outdoor air first when it helps, so you use less AC • See how your indoor temperature has changed since yesterday, with a sparkline on the dashboard • Temperature history chart: 24 hours, 7 days, or 30 days to see how many degrees you cooled or warmed • Fan guides for single-sided or cross-ventilation homes • Gentle reminders before the next change • Heat toolkit, Home Screen widget, Live Activity, Siri, and Shortcuts Set up once, then breathe Point your phone at each window so the app knows which way it faces and what is outside. Log your indoor temperature when you can. A thermometer helps, but you can start without one. Ventilate Pro, optional subscription Unlock outdoor air quality, pollen, UV index, and humidity on your dashboard. Pro feeds those signals into a sharper engine, so advice is clearer when cooler air is not always clean air to let in. Core window advice, history, widget, and toolkit stay free. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in your App Store account settings. Terms of Use: https://getventilate.app/terms Privacy Policy: https://getventilate.app/privacy ## Version history (last 5 releases) ### 1.9 — 2026-08-28 Thank you for using Ventilate! • New advice for daytime rain: we'll tell you when to close • Fan placement illustrations make it clearer where to place the fan • Every action stays on screen and is easy to tap • Setup shows your first recommendation and the next 24 hours • Log indoor temperature from the Home Screen widget • Animated fan on the advice card • Bug fixes and performance improvements Stay cool, and thanks for your feedback. If you have any questions, don't hesitate to contact us at bathilde@vivaceappstudio.fr ### 1.8 — 2026-08-25 Thank you for using Ventilate! • New advice: close the glass and keep blinds open for daylight on cooler or rainy days • Faster indoor temperature logs from Control Center, widgets, notifications, and Shortcuts • Fan card is back on the home screen with the right icon • Clearer temperature history charts and a share card for your cooling trend • Clearer setup for your home and windows • More reliable local weather • Smoother dashboard, charts, and window details Stay cool, and thanks for your feedback. If you have any questions, don’t hesitate to contact us at bathilde@vivaceappstudio.fr ### 1.7 — 2026-08-19 Thank you for using Ventilate! • Introducing Ventilate Pro — an optional subscription for air quality, pollen, UV, and humidity on your dashboard • Pro sharpens window advice when cooler air isn’t always clean air to let in • 24-hour forecast curves on the home screen and in Environment details (Pro) • Clearer temperature history charts, plus a share card for your cooling trend • Set pollen sensitivity from the dashboard when you’re ready • More reliable weather on iPhone • Core window advice, history, widget, and toolkit stay free Stay cool, and thanks for your feedback. If you have any questions, don’t hesitate to contact us at bathilde@vivaceappstudio.fr ### 1.6 — 2026-08-13 Thanks for using Ventilate! • Smarter window advice on hot days, using the day's peak temperature • Smoother onboarding with better explanations • Clearer home type options for more tailored advice • Fix for a small widget display issue • Bug fixes and translations Stay cool, and thanks for your feedback. If you have any questions, don’t hesitate to contact us at bathilde@vivaceappstudio.fr ### 1.5 — 2026-08-07 Thanks for using Ventilate! • Clearer compass hints when you set up windows • Smoother onboarding with clearer explanations • Better home type options for more tailored advice • Fix for a small widget display issue Stay cool, and thanks for your feedback. ## More apps by Vivace App Studio - [Breathing Exercise BreathInU](https://appshunter.io/ios/app/breathing-exercise-breathinu/id6741768013) All apps by Vivace App Studio: https://appshunter.io/developer/1795460622 --- *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 2026-08-29.*