# VikingTwo vs Luxafor CO2

VikingTwo and Luxafor CO2 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

VikingTwo ships an update every 3 months, Luxafor CO2 every 2 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | VikingTwo | Luxafor CO2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 12 MB | 54 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Visbiz AS](https://appshunter.io/developer/1895761041) | [Greynut LTD](https://appshunter.io/developer/1559879692) |

## What reviewers say

### VikingTwo

[App page](https://appshunter.io/ios/app/vikingtwo/id1572641657)

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

**In-app purchases:** none


### Luxafor CO2

[App page](https://appshunter.io/ios/app/luxafor-co2/id6444873126)

**In-app purchases:** none


## Frequently asked questions

### Is VikingTwo free?

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

### Is Luxafor CO2 free?

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

### Do VikingTwo or Luxafor CO2 have ads?

Neither VikingTwo nor Luxafor CO2 shows ads.

### Which is updated more often, VikingTwo or Luxafor CO2?

VikingTwo ships an update every 3 months, and Luxafor CO2 every 2 months. Most recently, VikingTwo was updated on September 18, 2026 and Luxafor CO2 on September 17, 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.*