# airTool vs Helios ELS

The clearest difference is update cadence: airTool at every 4 months against Helios ELS's every 11 months. 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.

airTool ships an update every 4 months, Helios ELS every 11 months. The most recent releases landed on September 23, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | airTool | Helios ELS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Size | 17 MB | 28 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roger Rehnelt](https://appshunter.io/developer/460800416) | [Helios Ventilatoren GmbH + Co KG](https://appshunter.io/developer/1553902986) |

## What reviewers say

### airTool

[App page](https://appshunter.io/ios/app/airtool/id463173545)

**Features:** macOS Compatibility

**In-app purchases:** none


### Helios ELS

[App page](https://appshunter.io/ios/app/helios-els/id6475874347)

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

**In-app purchases:** none


## Frequently asked questions

### Is airTool free?

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

### Is Helios ELS free?

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

### Do airTool or Helios ELS have ads?

Neither airTool nor Helios ELS shows ads.

### Which is updated more often, airTool or Helios ELS?

airTool ships an update every 4 months, and Helios ELS every 11 months. Most recently, airTool was updated on September 23, 2026 and Helios ELS on August 16, 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.*