VikingTwo vs Luxafor CO2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VikingTwo
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Viking Two is used for function testing, troubleshooting and documentation of correct installation of Mode 3 Type 2 charging stations for electric vehicles. Viking Two can simulate charging, test set current value, lock contact and voltage through contactor. Reading and activation of functions is done on the tester's screen, or via the app.
Luxafor CO2
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The Luxafor CO2 Dongle app allows you to monitor your environment and gather data about the air quality over time. So you can track your CO2 levels, air temperature, and humidity remotely. If you want to share your date data with friends, family members or teammates, just send an invite to allow them access data instantly. Also, you can customize each Luxafor CO2 Dongle's name and description to manage Dongle data flows and locations.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | VikingTwo | Luxafor CO2 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 12 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Visbiz AS | Greynut LTD |
In-app purchases
VikingTwo
No in-app purchases
Luxafor CO2
No in-app purchases
