# Air Vent vs KWM Gutterman

The clearest difference is rating: KWM Gutterman at 5.0 against Air Vent's 4.0. KWM Gutterman also leads on review sentiment (100% vs 60%) and update cadence (every 4 months vs every 14 months). Air Vent's advantage is iOS requirement (8.0 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

KWM Gutterman holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 60% of Air Vent's written reviews are positive against 100% of KWM Gutterman's.

Air Vent ships an update every 14 months, KWM Gutterman every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Air Vent | KWM Gutterman |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (6 ratings)](https://appshunter.io/ios/app/air-vent/id1138721814/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/kwm-gutterman/id1481465846/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 46 MB | 40 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Gibraltar Industries Inc.](https://appshunter.io/developer/1138721813) | [KWM Gutterman Inc](https://appshunter.io/developer/1481465695) |

## What reviewers say

### Air Vent

[App page](https://appshunter.io/ios/app/air-vent/id1138721814)

This app helps users calculate ventilation system requirements and roof pitch. It offers tools for precise measurements, an extensive library of project documents, and access to helpful videos and customer service information.

**Highlights:** Ventilation system calculation, Roof pitch calculation, Roof pitch camera mode, Roof pitch level mode, Product information documents, Information videos

**In-app purchases:** none


### KWM Gutterman

[App page](https://appshunter.io/ios/app/kwm-gutterman/id1481465846)

This app provides essential information for gutter installers. It includes machine adjustment videos, a coil calculator, and tools to manage job material lists and customer details.

**Highlights:** Machine adjustment videos, Coil calculator, Job material list, Customer information management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Air Vent free?

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

### Is KWM Gutterman free?

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

### Which has better reviews, Air Vent or KWM Gutterman?

KWM Gutterman is rated higher. Air Vent averages 4.0 out of 5 from 6 ratings, while KWM Gutterman averages 5.0 from 5 ratings.

### Do Air Vent or KWM Gutterman have ads?

Neither Air Vent nor KWM Gutterman shows ads.

### Which is updated more often, Air Vent or KWM Gutterman?

Air Vent ships an update every 14 months, and KWM Gutterman every 4 months. Most recently, Air Vent was updated on November 2, 2026 and KWM Gutterman on November 3, 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.*