# Caluwin — Smart calculation for windows

> Smart calculation for windows (iPhone/iPad app by Saint-Gobain.)

- Source: https://appshunter.io/ios/app/caluwin/id6808539823 (this page in markdown: same URL + `.md`)
- Developer: [Saint-Gobain](https://appshunter.io/developer/543924473)
- Category: Business
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 24 MB
- Languages: American English
- Released: 2026-10-07
- Data updated: 2026-10-13

## What is Caluwin?

"Caluwin is an app for calculating window performance parameters according
to DIN EN ISO 10077 and DIN EN13947.

Key features:
•	Calculation of window Uw values according to DIN EN ISO 10077 1 
•	Calculation of surface temperatures and condensation risk in the glass edge area 
•	Calculation of window energy savings for winter and summer conditions 
•	Window energy ratings for Switzerland, Denmark, France, and the United Kingdom 
•	Passive House efficiency assessment 
•	Swisspacer Air simulation, including lifetime effects and elevated transport scenarios

## Is Caluwin safe?

Not enough ratings yet to assess Caluwin.

## Is Caluwin legit?

Caluwin appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Caluwin is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.2 — 2026-10-07

No release notes.

## More apps by Saint-Gobain

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- [Glass dBstation](https://appshunter.io/ios/app/glass-dbstation/id570784006)
- [Soluciones de Aislamiento ISOVER](https://appshunter.io/ios/app/soluciones-de-aislamiento-isover/id786331079)
- [Saint-Gobain SHAREHOLDER](https://appshunter.io/ios/app/saint-gobain-shareholder/id884182089)
- [BD](https://appshunter.io/ios/app/bd/id890889320)

All apps by Saint-Gobain: https://appshunter.io/developer/543924473

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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 2026-10-13.*