Diesel CO2 vs Dauntless OBD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diesel CO2
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This is a can calculate the fuel consumption (diesel) and carbon dioxide emissions from utility.
Dauntless OBD
Configure your DauntlessOBD device wirelessly. Access vehicle data streams, diagnostic trouble codes, and manage firmware updates. A DauntlessOBD device is required for full functionality.
- Wireless pairing
- Firmware updates
- Vehicle data streams
- Diagnostic trouble codes (DTCs)
- Device configuration
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Official configuration app for the DauntlessOBD device. This app will help you with wireless pairing, firmware updates, and common vehicle data streams and diagnostic trouble codes. A DauntlessOBD device from Dauntless Devices LLC is required to use this app. Other devices are not supported.
Screenshots
Verdict
The clearest difference is update cadence: Dauntless OBD at every 3 weeks against Diesel CO2's every 10 months. On price, ads, in-app purchases and device support there is nothing between them.
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.
Diesel CO2 ships an update every 10 months, Dauntless OBD every 3 weeks. The most recent releases landed on October 15, 2026 and October 30, 2026 respectively.
| Parameter | Diesel CO2 | Dauntless OBD |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (12 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 12 — better |
| Update frequency | Every 10 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Addison Mai | Dauntless Devices LLC |
In-app purchases
Diesel CO2
No in-app purchases
Dauntless OBD
No in-app purchases
Questions
Is Diesel CO2 free?
Is Dauntless OBD free?
Do Diesel CO2 or Dauntless OBD have ads?
Which is updated more often, Diesel CO2 or Dauntless OBD?
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