# Aura CO2 vs airCoda

The clearest difference is update cadence: airCoda at every 10 days against Aura CO2's every 3 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.

Aura CO2 ships an update every 3 months, airCoda every 10 days. The most recent releases landed on December 20, 2025 and June 11, 2026 respectively.

## The numbers

| Metric | Aura CO2 | airCoda |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aircoda/id6449149043/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | — | Free |
| Size | 59 MB | 47 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ELICHENS](https://appshunter.io/developer/1538561088) | [AIRCODA LLC](https://appshunter.io/developer/1616692611) |

## What reviewers say

### Aura CO2

[App page](https://appshunter.io/ios/app/aura-co2/id1565190899)

**Features:** macOS Compatibility

**In-app purchases:** none


### airCoda

[App page](https://appshunter.io/ios/app/aircoda/id6449149043)

Monitor your indoor air quality with a connected sensor. View real-time levels, track exposure hotspots throughout the day, and review your air quality history.

**Highlights:** Real-time air quality monitoring, Day map of exposure hotspots, Air quality history calendar, Connects to airCoda Pocket Sensor, Connects to Aranet4 CO2 sensor

**In-app purchases:** none


## Frequently asked questions

### Is Aura CO2 free?

Aura CO2 is free to download, with no in-app purchases.

### Is airCoda free?

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

### Do Aura CO2 or airCoda have ads?

Neither Aura CO2 nor airCoda shows ads.

### Which is updated more often, Aura CO2 or airCoda?

Aura CO2 ships an update every 3 months, and airCoda every 10 days. Most recently, Aura CO2 was updated on December 20, 2025 and airCoda on June 11, 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.*