Comparison

BlueDriver OBD2 Scan Tool vs Interlock Warm Up

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

Interlock Warm Up

This app allows you to remotely start the interlock warm-up process for your vehicle. Avoid waiting in your car by initiating the warm-up sequence from your mobile device.

Highlights
  • Remote start warm-up process
  • Eliminate wait time in vehicle
  • Control interlock system
  • Mobile device integration
Features
Read full description

Remote start the LCI-777 interlock warm up process using the Low Cost Interlock Link app, eliminating wait time in your car.

Screenshots

BlueDriver OBD2 Scan Tool4 screens
Interlock Warm Up4 screens

Verdict

The call

The clearest difference is review sentiment: BlueDriver OBD2 Scan Tool at 57% against Interlock Warm Up's 0%. BlueDriver OBD2 Scan Tool also leads on rating (4.6 vs 1.5) and update cadence (every 9 days vs every 10 months). Interlock Warm Up's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 16.6). 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

BlueDriver OBD2 Scan Tool holds the better App Store score, 4.6 against 1.5. That said, the two scores are not equally well evidenced: BlueDriver OBD2 Scan Tool has 14K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 57% of BlueDriver OBD2 Scan Tool's written reviews are positive against 0% of Interlock Warm Up's.

UpkeepUpdate frequency

BlueDriver OBD2 Scan Tool ships an update every 9 days, Interlock Warm Up every 10 months. The most recent releases landed on September 30, 2026 and June 3, 2026 respectively.

Scorecard6 real differences · 4 level
BlueDriver OBD2 Scan Tool versus Interlock Warm Up: the parameters behind the verdict, then further details
ParameterBlueDriver OBD2 Scan ToolInterlock Warm Up
PriceFreeFree
Rating4.6 (14K ratings) — better1.5 (8 ratings)
Positive reviews57.1% of reviews — better0.0% of reviews
Number of ratings14K — better8
Update frequencyEvery 9 days — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size278 MB26 MB
Age rating4+4+
DeveloperLemur Vehicle MonitorsLow Cost Interlock

Customer experience

BlueDriver OBD2 Scan Tool

All ratings13,691 ratings
Positive90.7%
Neutral2.2%
Negative7.1%
Written reviews863 reviews
Positive57.1%
Neutral5.3%
Negative37.5%

Interlock Warm Up

All ratings8 ratings
Positive12.5%
Neutral0.0%
Negative87.5%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Interlock Warm Up

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

BlueDriver OBD2 Scan Tool

No in-app purchases

None

Interlock Warm Up

No in-app purchases

Questions

Is BlueDriver OBD2 Scan Tool free?
BlueDriver OBD2 Scan Tool is free to download, with no in-app purchases.
Is Interlock Warm Up free?
Interlock Warm Up is free to download, with no in-app purchases.
Which has better reviews, BlueDriver OBD2 Scan Tool or Interlock Warm Up?
BlueDriver OBD2 Scan Tool is rated higher. BlueDriver OBD2 Scan Tool averages 4.6 out of 5 from 14K ratings, while Interlock Warm Up averages 1.5 from 8 ratings.
Do BlueDriver OBD2 Scan Tool or Interlock Warm Up have ads?
Neither BlueDriver OBD2 Scan Tool nor Interlock Warm Up shows ads.
Which is updated more often, BlueDriver OBD2 Scan Tool or Interlock Warm Up?
BlueDriver OBD2 Scan Tool ships an update every 9 days, and Interlock Warm Up every 10 months. Most recently, BlueDriver OBD2 Scan Tool was updated on September 30, 2026 and Interlock Warm Up on June 3, 2026.

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