BlueDriver OBD2 Scan Tool vs J1939OBD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BlueDriver OBD2 Scan Tool
This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.
- Read and clear trouble codes (Check Engine, ABS, etc.)
- Generate professional-grade Repair Reports
- Access Mode 6 and smog readiness data
- View live data with interactive graphing
- Wireless Bluetooth scanning
- Likely fixes explained in plain language
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BlueDriver® transforms your iPhone or iPad into a powerful OBD2 scan tool – trusted by over 1 million drivers, from professional mechanics to DIYers. Paired with the BlueDriver Bluetooth® Sensor (sold separately), it lets you read codes, diagnose issues, and fix your car with confidence—no wires, no guesswork. Whether you're checking a check engine light, running a smog test, or diving into enhanced diagnostics like ABS or transmission codes, BlueDriver gives you the tools you need to understand your vehicle and make smarter repair decisions – with clear, easy-to-understand information. What You Can Do with BlueDriver · Read and clear trouble codes - including check engine, ABS, airbag, transmission, and more · Generate, save, and share professional-grade Repair Reports based on your exact vehicle and trouble code · Access Mode 6 on-board monitoring test results · Check smog readiness and freeze frame data · View live data with multi-PID interactive graphing · Scan your vehicle wirelessly with Bluetooth—no cables required · Choose between metric and imperial settings · Get likely fixes for your vehicle’s issues, explained in plain language Enhanced Diagnostics Coverage · GM, Ford, Chrysler, Toyota, Nissan, Mazda, Mercedes (2005+ models) · Mitsubishi (2008+), Hyundai/Kia (2012+) – available worldwide · BMW/Mini, Honda/Acura, Volkswagen/Audi – available in North America · Subaru – available in the United States What Makes BlueDriver Different? · No subscription required · Backed by a database of millions real-world fixes · Repair Reports are specific to your vehicle’s year, make, and model · Works globally with the BlueDriver Sensor · App is free to install—just pair with the Sensor to start scanning You can even preview a Repair Report without a Sensor by entering your VIN and a trouble code. Account Setup Made Easy You’ll create a BlueDriver account during setup—it’s quick and easy, and gives you secure access to all your scans, reports, and new features across any device. Important Info The BlueDriver Sensor plugs into your vehicle’s data port (found in every car built since 1996). It connects to the app via Bluetooth® to deliver full diagnostic functionality. Sensor sold separately in-app or at www.BlueDriver.com
J1939OBD
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A diagnostic app for industrial and commercial vehicle engines using the J1939 CAN protocol. The app supports the following functions: - Display the active error codes - Display the passive error codes - Delete the error codes - Display of engine measured values - Information about the status DPF - Information about the SCR system - Information about fuel consumption - Engine information - Terminal mode To connect to the engine you need an EML327 compatible Wifi OBD interface as of V1.4 and a connection cable from the diagnostic connector to OBD. Various manufacturers offer corresponding cables, as well as a well-known engine manufacturer from Cologne, who distributes a corresponding adapter cable via his dealer network. Visit my homepage for further informations. An EML327 Wifi interface is offered on known Internet platforms.
Screenshots
Verdict
The clearest difference is in-app purchases: BlueDriver OBD2 Scan Tool at none against J1939OBD's 1. BlueDriver OBD2 Scan Tool also leads on update cadence (fortnightly vs every 41 months). J1939OBD's advantage is iOS requirement (12.1 vs 16.6). On price, ads 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. J1939OBD sells 1 one-off in-app purchase. BlueDriver OBD2 Scan Tool asks for nothing beyond the download.
BlueDriver OBD2 Scan Tool ships an update fortnightly, J1939OBD every 41 months. The most recent releases landed on October 19, 2026 and September 18, 2026 respectively.
| Parameter | BlueDriver OBD2 Scan Tool | J1939OBD |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (14K ratings) — better | — |
| Positive reviews | 57.2% of reviews | — |
| Number of ratings | 14K — better | — |
| Update frequency | Fortnightly — better | Every 41 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 12.1 — better |
| Further details — not scored | ||
| Size | 273 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Lemur Vehicle Monitors | S.Koepge |
Bugs and requests
BlueDriver OBD2 Scan Tool
Reported bugs
3 issues- Occasional app crashes
- Failure to detect vehicle faults in some cases
- Inability to update firmware on certain devices
Requested features
10 requests- Add support for more vehicle makes and models
- Improve Bluetooth stability and connectivity
- Implement odometer reading functionality
- Expand diagnostic capabilities to include more advanced features
- Add support for European vehicle VINs
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- Enable reading of additional fault codes (e.g., airbag)
- Maintain compatibility with older iOS versions
- Introduce CarPlay integration
- Add customizable live data dashboards
- Implement audible alerts for critical sensor readings
J1939OBD
Not enough reviews yet to summarise bugs or requests.
In-app purchases
BlueDriver OBD2 Scan Tool
No in-app purchases
J1939OBD
- Get full access for 1939OBD$3.99
Questions
Is BlueDriver OBD2 Scan Tool free?
Is J1939OBD free?
Do BlueDriver OBD2 Scan Tool or J1939OBD have ads?
Which is updated more often, BlueDriver OBD2 Scan Tool or J1939OBD?
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