Comparison

BlueDriver OBD2 Scan Tool vs AZNote

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

AZNote

Features
Read full description

AZNote is a note app built around structure. Every line is its own item, so a note behaves like an outline instead of a wall of text: click a bullet and the branch folds away, click again and it returns exactly as you left it. WRITE THE WAY YOU THINK Type "- " to start a list. Tab and Shift-Tab move an item in and out, carrying everything underneath it. Paste a list from anywhere and it becomes a real outline, with its levels intact. TAGS, PEOPLE, PRIORITIES Drop a coloured chip into the text — TODO, IDEA, or any you define — with a click or a shortcut. The same chips mark who is doing what and how urgent it is. Filter the whole library by any of them: only the documents carrying it stay in the tree, and inside a document a counter steps you through every occurrence, opening folded branches on the way. TICK LINES OFF Mark a line done from the toolbar, a shortcut or the context menu: it is struck through and stamped with the date and time. One switch hides every done line, so what is left is what still needs you. REMINDERS ON THE EXACT LINE Give a line a date and time. Tapping the notification opens that document, scrolls to the line that raised it and highlights it — you land on the thought, not near it. THE AGENDA: EVERYTHING DUE, IN ONE PLACE Pick a tag, a person and a priority — together, not one at a time — and see every line in the whole library that carries them, soonest reminder first and overdue in red. It sits beside your note: click an entry and the editor jumps there, across notes, while the list stays open for the next one. BOOKMARKS Mark any line you keep coming back to and reach it from the toolbar, whichever note it lives in. SHARE A NOTE — OR ONE BRANCH — ON THE WEB Send a link to someone who does not use AZNote. They open a page in any browser and edit it with you, changes travelling both ways. Give each link a name, and every change made through it is filed under that name in the note's History — who, when, and which lines. Encrypt the note and the key travels only in the link, so the server keeps something it cannot read. A short wizard sets what the link allows: read-only, tick boxes or not, and whether you are told when someone edits it. Sharing a folder through iCloud works too, for other Apple users. ALSO IN THE PAGE Search across notes, folders and chips. Editable keyboard shortcuts. Handwriting with Apple Pencil, PDF import and annotation, audio recording linked to the page, a word-processor toolbar, and automatic backups you can restore whole or one note at a time. IPHONE, IPAD AND MAC One app for all three. Your notes sync through your own iCloud account — no AZNote account, no server in between. Web sharing is the one exception, and only for the notes you choose to share. FREE AND PRO Use AZNote free for up to three documents, with every feature available. One yearly subscription removes the limit, on all your devices. Payment is charged to your Apple Account; the subscription renews automatically unless cancelled at least 24 hours before the end of the period. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aznote.edros.com/privacy

Screenshots

BlueDriver OBD2 Scan Tool4 screens
AZNote4 screens

Verdict

The call

The clearest difference is in-app purchases: BlueDriver OBD2 Scan Tool at none against AZNote's 1. AZNote's advantage is update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AZNote sells 1 in-app purchase, starting at $14.99 per year. BlueDriver OBD2 Scan Tool asks for nothing beyond the download.

UpkeepUpdate frequency

BlueDriver OBD2 Scan Tool ships an update fortnightly, AZNote every 2 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
BlueDriver OBD2 Scan Tool versus AZNote: the parameters behind the verdict, then further details
ParameterBlueDriver OBD2 Scan ToolAZNote
PriceFreeFree
Rating4.6 (14K ratings) — better—
Positive reviews57.2% of reviews—
Number of ratings14K — better—
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.6 — better17.0
Further details — not scored
Size273 MB7 MB
Age rating4+4+
DeveloperLemur Vehicle Monitorsilevia

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
Show 5 more
  • 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

AZNote

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

BlueDriver OBD2 Scan Tool

No in-app purchases

1 purchases

AZNote

Subscriptions1
  • AZNote Pro$14.991 Year

Questions

Is BlueDriver OBD2 Scan Tool free?
BlueDriver OBD2 Scan Tool is free to download, with no in-app purchases.
Is AZNote free?
AZNote is free to download, with in-app purchases available.
Do BlueDriver OBD2 Scan Tool or AZNote have ads?
Neither BlueDriver OBD2 Scan Tool nor AZNote shows ads.
Which is updated more often, BlueDriver OBD2 Scan Tool or AZNote?
BlueDriver OBD2 Scan Tool ships an update fortnightly, and AZNote every 2 days. Most recently, BlueDriver OBD2 Scan Tool was updated on October 13, 2026 and AZNote on October 1, 2026.

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