# HeatWave vs Coolhouse

The clearest difference is in-app purchases: Coolhouse at none against HeatWave's 3. Coolhouse also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HeatWave sells 3 one-off in-app purchases. Coolhouse asks for nothing beyond the download.

HeatWave ships an update every 11 days, Coolhouse weekly. The most recent releases landed on August 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | HeatWave | Coolhouse |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Free | — |
| Size | 29 MB | 43 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Hefferman](https://appshunter.io/developer/1444958558) | [Arnaud Allouis](https://appshunter.io/developer/6782636323) |

## What reviewers say

### HeatWave

[App page](https://appshunter.io/ios/app/heatwave-smart-window-alerts/id6773258116)

This app monitors outdoor and indoor temperatures to alert you when to open or close your windows for optimal home climate control. It uses your HomePod's sensor and local weather forecasts to provide timely notifications, helping you save energy and stay comfortable without an air conditioner.

**Highlights:** Real-time indoor/outdoor temperature display, Forecast-based opening/closing alerts, 30-minute advance notifications, Home screen widgets, Privacy-first, no servers or tracking, Multi-language support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Money Tip | $2.99 | one-time |
| Pint Money Tip | $4.99 | one-time |
| Dinner Money Tip | $14.99 | one-time |


### Coolhouse

[App page](https://appshunter.io/ios/app/coolhouse/id6782636321)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HeatWave free?

HeatWave is free to download, with in-app purchases available.

### Is Coolhouse free?

Coolhouse is free to download, with no in-app purchases.

### Do HeatWave or Coolhouse have ads?

Neither HeatWave nor Coolhouse shows ads.

### Which is updated more often, HeatWave or Coolhouse?

HeatWave ships an update every 11 days, and Coolhouse weekly. Most recently, HeatWave was updated on August 14, 2026 and Coolhouse on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*