# Heatcheck NA — Know when to open your windows

> Know when to open your windows (iPhone/iPad app by Adam Lewicki.)

- Source: https://appshunter.io/ios/app/heatcheck-na/id1522381620 (this page in markdown: same URL + `.md`)
- Developer: [Adam Lewicki](https://appshunter.io/developer/289557759)
- Category: Utilities, Weather
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 10 MB
- Languages: American English, French (France), German (Germany), Japanese
- Released: 2020-07-18
- Data updated: 2026-05-18
- User reviews in markdown: https://appshunter.io/ios/app/heatcheck-na/id1522381620/reviews.md

## What is Heatcheck NA?

Stop guessing when to ventilate. During hot summer days, opening a window at the wrong time makes your home even hotter. Heatcheck NA solves this instantly.

Simply connect your Netatmo account and see:
Instant Analysis: Know exactly when outside air will actually cool down your home.
Clear Advice: Get a simple "Yes/No" recommendation at a glance.
Full Support: Works seamlessly with every Netatmo Weather Station model.

(More weather stations coming soon)


## Version history (last 5 releases)

### 2.0.0 — 2026-02-14

UI overhauled.
Faster & snappier

### 1.2.9 — 2025-08-26

- Upgraded all the bits and bobs working in the background for added stability
- Made sure to only use the Netatmo API Endpoint that will be supported from September 2025 onwards.

### 1.2 — 2022-11-12

Fixes a bug presenting the wrong outside weather temperatures under certain weather station configurations

### 1.1 — 2020-08-02

Thank you for using Heatcheck NA!
Only one short glance lets you know if it's time to open a window.

- Heatcheck now supports multiple indoor modules. 
- Fixed some nasty bugs.

### 1.0 — 2020-07-18

No release notes.

## Apps similar to Heatcheck NA

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| --- | --- | --- | --- |
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| [topsAir - Time for fresh air!](https://appshunter.io/ios/app/topsair-time-for-fresh-air/id1547116031) | — | Free | Utilities |
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| [Brigerbad](https://appshunter.io/ios/app/brigerbad/id6444189060) | — | Free | Utilities |
| [Thermometer - Quick Temp](https://appshunter.io/ios/app/thermometer-quick-temp/id6446575645) | 3.0 (2) | Free | Utilities |

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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 2026-05-18.*