# AirBot vs Checkware 4

The clearest difference is price: Checkware 4 at Free against AirBot's $0.99. Checkware 4 also leads on in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 6 months). On ads, device support and iOS requirement there is nothing between them.

Checkware 4 is free to download; AirBot costs $0.99 up front. AirBot sells 1 one-off in-app purchase. Checkware 4 asks for nothing beyond the download.

AirBot ships an update every 6 months, Checkware 4 every 6 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | AirBot | Checkware 4 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 53.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 4 MB | 19 MB |
| Requires iOS | 17.0 | **16.1** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Dubiel](https://appshunter.io/developer/584489819) | [New Solutions GmbH](https://appshunter.io/developer/1126273236) |

## What reviewers say

### AirBot

[App page](https://appshunter.io/ios/app/airbot/id619267781)

This app helps you manage room ventilation to improve air quality and prevent mildew. It reminds you when to open windows and for how long, offering energy-saving benefits. The full version allows unlimited rooms and weather station integration.

**Highlights:** Room ventilation reminders, Open window alerts, Customizable ventilation schedules, Energy saving tips, Unlimited room support (Full Version), Netatmo weather station integration (Full Version)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |


### Checkware 4

[App page](https://appshunter.io/ios/app/checkware-4/id1286629728)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AirBot free?

AirBot costs $0.99, and also offers in-app purchases.

### Is Checkware 4 free?

Checkware 4 is free to download, with no in-app purchases.

### Do AirBot or Checkware 4 have ads?

Neither AirBot nor Checkware 4 shows ads.

### Which is updated more often, AirBot or Checkware 4?

AirBot ships an update every 6 months, and Checkware 4 every 6 weeks. Most recently, AirBot was updated on November 1, 2026 and Checkware 4 on November 6, 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.*