# DoubleGlazingApp vs ProAirVENT Connect

The clearest difference is update cadence: DoubleGlazingApp at every 3 weeks against ProAirVENT Connect's every 9 months. DoubleGlazingApp also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DoubleGlazingApp ships an update every 3 weeks, ProAirVENT Connect every 9 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | DoubleGlazingApp | ProAirVENT Connect |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 9 MB | 20 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Infonote](https://appshunter.io/developer/381507445) | [Shane Dennehy](https://appshunter.io/developer/1751466808) |

## What reviewers say

### DoubleGlazingApp

[App page](https://appshunter.io/ios/app/doubleglazingapp/id1455462117)

Easily measure and price new double glazing units at your own pace. Features an assistive measuring tool and allows direct submission of measurements to installers for the next stage of your inquiry.

**Highlights:** Measure double glazing units, Price double glazing units, Assistive measuring device, Submit measurements to installers, Professional assistance button

**Features:** macOS Compatibility

**In-app purchases:** none


### ProAirVENT Connect

[App page](https://appshunter.io/ios/app/proairvent-connect/id6504237829)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DoubleGlazingApp free?

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

### Is ProAirVENT Connect free?

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

### Do DoubleGlazingApp or ProAirVENT Connect have ads?

Neither DoubleGlazingApp nor ProAirVENT Connect shows ads.

### Which is updated more often, DoubleGlazingApp or ProAirVENT Connect?

DoubleGlazingApp ships an update every 3 weeks, and ProAirVENT Connect every 9 months. Most recently, DoubleGlazingApp was updated on October 24, 2026 and ProAirVENT Connect on October 13, 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.*