# Air Guard vs Radoff

The clearest difference is review sentiment: Radoff at 82% against Air Guard's 11%. On price, update cadence, 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.

Air Guard ships an update every 2 months, Radoff every 5 weeks. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Air Guard | Radoff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/radoff/id1607852470/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 10.5% of reviews | **81.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 73 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Helty srl](https://appshunter.io/developer/1562108660) | [Radoff S.p.A.](https://appshunter.io/developer/1756269459) |

## What reviewers say

### Air Guard

[App page](https://appshunter.io/ios/app/air-guard/id1444797302)

Manage your Helty VMC systems for optimal indoor air quality and comfort. Monitor humidity and pollutant levels in each room. Enjoy intuitive control over air exchange with just one touch.

**Highlights:** Integrated VMC system management, Room-specific air exchange control, Real-time air quality monitoring, Humidity and pollutant level display, Intuitive touch interface

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

**In-app purchases:** none


### Radoff

[App page](https://appshunter.io/ios/app/radoff/id1607852470)

This app monitors indoor air quality, detecting pollutants like radon, CO2, and VOCs. It provides real-time data, historical trends, and smart notifications to help you create a healthier living environment. Easily understand complex readings and receive actionable tips for improvement.

**Highlights:** Comprehensive indoor monitoring, Real-time data access, Historical data and graphs, Smart notifications and alerts, Easy-to-interpret readings, Smart Home Integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Air Guard free?

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

### Is Radoff free?

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

### Do Air Guard or Radoff have ads?

Neither Air Guard nor Radoff shows ads.

### Which is updated more often, Air Guard or Radoff?

Air Guard ships an update every 2 months, and Radoff every 5 weeks. Most recently, Air Guard was updated on September 20, 2026 and Radoff 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.*