# Evaporative Cooler Forecaster — Know when the cooler works!

> Predicts evaporative cooler effectiveness based on weather forecasts and user settings. (iPhone/iPad app by John Pierce.)

- Source: https://appshunter.io/ios/app/evaporative-cooler-forecaster/id6745530908 (this page in markdown: same URL + `.md`)
- Developer: [John Pierce](https://appshunter.io/developer/1812768264)
- Category: Weather
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 75 MB
- Languages: American English
- Released: 2025-11-05
- Data updated: 2026-08-14
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/evaporative-cooler-forecaster/id6745530908/reviews.md

## What is Evaporative Cooler Forecaster?

Find out when you can run your evaporative cooler, based on the favorable weather conditions in your forecast.  If you live in a dry, arid climate and use a whole-house evaporative cooler to keep cool, it can be hard to know when it'll actually work!  Sometimes it's fine in the morning, but too humid or hot indoors later in the evening when you'll need to run the A/C.  Using your outdoor weather forecast, this app gives your indoor cooler forecast!  You'll get:

* An easy-to-read dashboard, showing the indoor temperature and indoor humidity that your cooler would produce, right now.
* Your forecast for the hours and days ahead, to know when and how long you can use Cooling mode!  Or when you could switch to Fan mode for extra ventilation.  Most importantly, it shows when the weather won't be cooperative, so you can switch back to A/C before it gets too sticky or hot indoors.
* Your cost($) and energy(kWh) savings estimates from using a swamp cooler vs air conditioning.
* Your historical weather summarized as annual reports of how effective evaporative cooling was, in terms of hours of A/C reduced, kWh saved, and dollars unspent.
* Customizable settings so you can pick your own temperature comfort zone, humidity tolerance, local energy rates, A/C sizing and efficiency values, and more.  Best of all, when you customize your settings, your forecast of mode changes is also updated, and you can see the effects on energy and cost savings.
* Pick your specific "Pad Cooling Power" setting to match your pad's performance, for any pad type: Aspen, DuraCool mesh, Honeycomb, CellDek, etc.

For fun, you can explore the cooler forecasts from other sites around the world, in the Explore tab.  You can see their weather and savings data to help contrast it with your own.

If you don't have a swamp cooler, you can instead use the app to judge when to run a box fan in your windows, using your personal Fan Mode comfort zone settings.

Take the mystery out of running your evaporative cooler with a personalized forecast that tells you what it will feel like indoors and how to save the most with your cooler.

## Key features

- Real-time indoor temperature and humidity forecast
- Future mode recommendations (Cooling, Fan, A/C)
- Estimated cost and energy savings
- Historical weather and cooling effectiveness reports
- Customizable comfort zones and energy rates
- Pad cooling power settings
- Global cooler forecast exploration

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 62-Day Basic Pass (75% Off) | $1.69 | one-time |
| 92-Day Basic Pass (25% Off) | $6.69 | one-time |
| 92-Day Basic Pass (75% Off) | $2.19 | one-time |
| 123-Day Basic Pass (20% Off) | $7.59 | one-time |
| 62-Day Basic Pass (25% Off) | $5.19 | one-time |
| 62-Day Basic Pass (90% Off) | $0.69 | one-time |
| 92-Day Basic Pass | $8.99 | one-time |
| 123-Day Basic Pass | $9.49 | one-time |
| 92-Day Basic Pass (90% Off) | $0.89 | one-time |
| 123-Day Basic Pass (35% Off) | $6.09 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/evaporative-cooler-forecaster/id6745530908/reviews.md

### 5/5 — Must-have for Swamp Cooler Owners

*2025-06-17*

This app is really cool! If you have a swamp cooler, it will tell you exactly when you should be running it for optimal comfort and cost, based on the weather conditions in your area. Where has this been all my life?

## Frequently asked questions about Evaporative Cooler Forecaster

### What is the Evaporative Cooler Forecaster?

Evaporative Cooler Forecaster predicts when your evaporative cooler will work best based on outdoor weather forecasts. It provides an estimated indoor temperature and humidity, helping you decide between cooling, fan, or A/C modes.

### How does Evaporative Cooler Forecaster help save money?

The app estimates cost and energy savings by comparing evaporative cooler usage to air conditioning. Historical reports also show how much you've saved annually by reducing A/C use.

### Can I customize Evaporative Cooler Forecaster settings?

Yes, you can customize your comfort zone, humidity tolerance, local energy rates, A/C efficiency, and specific pad cooling power to match your cooler's performance.

### Does Evaporative Cooler Forecaster have ads?

Yes, Evaporative Cooler Forecaster contains advertisements. This allows the app to be offered for free to users.

### What devices is Evaporative Cooler Forecaster available on?

Evaporative Cooler Forecaster is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Evaporative Cooler Forecaster updated?

The latest version is 1.0.70, last updated on March 23, 2026. Updates typically address bug fixes and feature enhancements.

### What is the age rating for Evaporative Cooler Forecaster?

Evaporative Cooler Forecaster has an age rating of 4+. This indicates it is suitable for most users.

### Can I see cooler forecasts from other places?

Yes, the 'Explore' tab allows you to view cooler forecasts and savings data from other locations around the world, offering a comparison to your own data.

## Version history (last 5 releases)

### 1.1.2 — 2026-07-03

* Minor update for annual subscriptions release.

### 1.1.1 — 2026-06-29

* Now you can turn off ads with a paid subscription
* Improved Inside Temperature gauge to include comfort zone settings on Home tab
* Improved speed when switching to Settings tab
* Currency selector is much faster
* More resilient networking on first-install

### 1.0.70 — 2026-03-23

This is a maintenance release, with updated dependencies.
And a minor bugfix to the animated emoji on the Explore tab: tap once to cycle emojis or double-tap to toggle repeating the animation.

### 1.0.69 — 2025-11-14

New feature: Thermostat support!
* If your cooler is controlled by a thermostat, your indoor forecast will be even smarter (and more accurate!)
* Check Settings to switch ON the "Thermostat Controlled?" feature, if you use a thermostat with your cooler.
* It uses the LOW temperature from your Comfort Zone settings as your thermostat's target temperature.

### 1.0.68 — 2025-11-08

Minor bugfixes for international users: date and time formats now follow more international conventions, such as 12 vs 24-hour time.

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## Related topics

[evaporative cooler forecaster](https://appshunter.io/ios/topics/evaporative-cooler-forecaster) · [forecaster](https://appshunter.io/ios/topics/forecaster)

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*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.*