Cool Cue: Open Window Alerts
Night air cooling reminders
Free · In‑App Purchases
Open your windows when the night air turns cool. Close them before the heat. $1.99 a month in the US. Patent Pending.
Cool Cue reminds you when to open your windows for the night air, and when to close them again before the day warms up. Real hourly temperatures, on your phone.
COOL YOUR HOME WITH THE NIGHT AIR
Cool Cue watches the forecast and tells you when the outside air has turned cooler than your house — so you can open the windows in the evening and let the night do the work. In the morning it reminds you to close them again, before the day warms up.
EVENING — OPEN YOUR WINDOWS
At sunset, or at a time you pick. Cool Cue shows you tonight's real hourly temperatures so you can see the drop coming, instead of guessing.
MORNING — CLOSE THEM AGAIN
At a time you pick. Shut the house before the day warms up and hold on to the cool you collected overnight.
IT STAYS QUIET ON COOL DAYS
You set the temperature that matters to you. Cool Cue only sends reminders on days when the forecast high actually reaches it — so a mild week passes without a single notification.
• Pick your own trigger temperature
• Type in your town — anywhere in the world
• °F or °C, 12-hour or 24-hour clock
• Open at sunset, or an hour you choose
• Set your default morning close time
• Set it up once and close the app
THE REAL NUMBERS, NOT A PROMISE
Cool Cue shows you the actual hourly forecast for tonight and tomorrow morning, and the highs and lows for the next eight days. It tells you what the air is doing and leaves the decision where it belongs — with you. On a night that will not cool down, it says so plainly rather than telling you to open the windows anyway.
A HEADS-UP BEFORE A HOT STRETCH
When a run of hot days is coming, Cool Cue tells you at the start of it — not on the third afternoon when the house has already stored the heat. It names the days, shows the highs, and reminds you to check on the people nearby who may be struggling with it.
AND WHEN IT TURNS COLD
Cool Cue also watches for a freeze in the eight days ahead. If one is coming, it sends a reminder and opens a short preparation checklist — pipes, outdoor taps, pets, and a plain safety warning about heating a home with anything that burns.
WHAT COOL CUE DOES NOT DO
• It does not know where you are. You type your town in. There is no GPS and no location permission.
• It does not track you. No accounts, no advertising, no analytics, nothing sold. Everything stays on your phone.
• It only measures temperature. It does not monitor air quality, smoke, humidity or pollen — check those yourself before opening up.
• It does not control anything. No thermostat, no smart devices. It sends reminders; you decide.
• It cannot promise a reminder will arrive. Phones get switched off, silenced or lose signal. Please do not rely on it as your only warning.
• It is not a safety or emergency service. The freeze reminders are a convenience, nothing more.
Only you can judge whether it is safe to open your windows. If you cannot open up and cannot stay cool, please seek help.
LANGUAGES
English · Español · Français · Deutsch · Italiano · Português · Nederlands · Polski · Ελληνικά. Cool Cue follows your phone's language automatically.
A SUBSCRIPTION KEEPS IT RUNNING
Cool Cue watches the forecast around the clock and sends your reminders. A subscription keeps them coming. It costs $1.99 a month in the US (your local price elsewhere). Payment is charged to your Apple Account, and you can manage or cancel it any time in Settings → your name → Subscriptions. Your subscription renews automatically unless you cancel at least 24 hours before the end of the current period. If it lapses, Cool Cue stops and all reminders stop, including the freezing-weather reminders.
Cool Cue is made by I Called Twice LLC, a family-run business in Aurora, Oregon. Patent pending.
Weather data by OpenWeather.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Terms: https://coolcue.com/terms
Privacy policy: https://coolcue.com/privacy
Support: support@coolcue.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The App Store description now shows the price: $1.99 a month in the US (your local price elsewhere). No changes to how the app works.
The developer, I Called Twice LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- I CALLED TWICE LLC
- Size
- 34.5 MB
- Category
- Weather
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later.
- iPhone
- Languages
English and 8 more
- English, Dutch, French, German, Greek, Italian, Polish, Portuguese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cool Cue Monthly $1.99
- Copyright
- © 2026 I Called Twice LLC