Cool Off automatically notifies you when you can start using your whole house fan. No longer will you have to guess or constantly check the weather to know when to turn off your air conditioner and begin using your whole house fan.

Cool Off offers Free and Premium subscriptions so that you can go green and save money, no matter which package you choose!

- Upon receiving notification to turn off your air conditioner and to turn on your whole house fan, the outdoor temperature will only get cooler for the remainder of the day.
- Notifies you when air conditioning is not needed on cooler days.
- View the latest status updates on your monitoring including the outdoor temperature, approximate time to turn off your air conditioner and to turn on your whole house fan, attainability of your desired outdoor temperature, and more.
- Supports multiple devices to allow you and your household members to share a single account.
- Customize settings to match your preferences including desired temperature, actual temperature vs. feels like temperature, start/stop time, and more.
- Helps maximize the benefits of using whole house fans.
- Monitoring is performed on dedicated servers to minimize resources used by your device.
- Supports locations worldwide that are weather monitored by Weather Underground.

Cool Off Pricing:

- Monthly Subscription - USD $1.99*
* For non-US app stores, equivalent currency charges will apply.

Additional Subscription Information:

- Payment will be charged to iTunes Account at confirmation of purchase.
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.
- Subscriptions can be managed in the user's account settings.

Privacy Policy -
Terms & Conditions -

What’s New

Version 1.13

Updates to metadata.

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

sweetviolet79 ,

down for maintenance for 2 DAYS?!

I’m trying to log in and for 2 days I’ve gotten a message saying the app is down for maintenance. it includes an address to go to for more information. I typed the address into safari and got a 404 file not found on the cool off website. I went to the home page and looked for the “news” section that’s supposed to include maintenance updates, there’s no news about maintenance & after scrolling I can see there has never been any news like that.
It’s just another page selling an app that right now, hasn’t worked for 2 days.

TeenZer0 ,

Small app, big value

Imagine one day, when you wake up, you receive some advices to turn off your air condition, open your windows to save energy and give you a chance to enjoy the environment, awesome right?

LaiLiGa ,

Everything is perfect

Instead of thinking about the way to saving money, it’s easier to download and use this app. Believe me; this app is ideal for you to save money and make your life greener!


Cool Off App LLC
16 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2016 Cool Off App, LLC
In-App Purchases
  1. Cool Off Subscription $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.