Comparison

OBD2 Scanner | OBD Auto Doctor vs Code

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

Head to head
About

OBD2 Scanner | OBD Auto Doctor

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

Highlights
  • Read and clear OBD2 diagnostic trouble codes (DTC)
  • Reset Check Engine Light
  • Monitor real-time vehicle data and sensor readings
  • Track fuel consumption
  • Read readiness monitor status for emissions testing
  • Initiate service routines
  • Send diagnostic data via email
Read full description

Turn your iPhone into a powerful OBD2 car scanner and diagnose your vehicle yourself. Check why your Check Engine Light is on, read and clear diagnostic trouble codes, monitor live engine data, and check emissions readiness — all from your iPhone or iPad with a compatible OBD2 dongle. CHECK YOUR CHECK ENGINE LIGHT Don't guess what's wrong with your car. OBD Auto Doctor reads diagnostic trouble codes from your vehicle and provides detailed information to help you understand what they mean. • Read diagnostic trouble codes (DTCs) • Clear Check Engine Light codes • View detailed code descriptions • Read freeze-frame data MONITOR YOUR CAR IN REAL TIME See what's happening while your engine is running with live OBD2 data. • Engine RPM and vehicle speed • Coolant temperature • Fuel system and fuel trim data • Throttle position • Intake air and engine load • Oxygen sensor data • And many other vehicle parameters Create your own dashboard and choose exactly which sensors you want to monitor. CHECK EMISSIONS READINESS Preparing for an emissions or vehicle inspection? Check your vehicle's readiness monitors and see whether your car's emissions systems have completed their tests. WORKS WITH OBD2 DONGLES Connect OBD Auto Doctor to your vehicle using a compatible Bluetooth, Wi-Fi or Bluetooth Low Energy (BLE) OBD2 dongle. Compatible dongles include many ELM327-based adapters, OBDLink, Vgate, Linker, Veepeak and other compatible OBD2 interfaces. Please note: An OBD2 dongle is required to connect the app to your vehicle. Dongle compatibility and available features depend on your vehicle. MORE THAN JUST A CODE READER OBD Auto Doctor gives you access to the information your car's onboard diagnostic system makes available. • Read vehicle information • Monitor fuel consumption • View and record live sensor data • Read diagnostic trouble codes • Clear diagnostic trouble codes • Check emissions readiness • View freeze-frame data • Monitor vehicle performance Whether you're trying to understand a Check Engine Light, preparing your car for inspection, monitoring your engine, or simply want to know more about your vehicle, OBD Auto Doctor puts professional-style OBD2 diagnostics in your pocket. Download OBD Auto Doctor and start diagnosing your car today. SUBSCRIPTION OBD Auto Doctor offers optional subscriptions that unlock additional features. Terms of Use: https://www.obdautodoctor.com/terms

About

Code

Diagnose Harley-Davidson motorcycle issues directly from your iPhone. Access detailed code descriptions, view diagnostic videos, and monitor live sensor data. Save and retrieve your code history for advanced troubleshooting.

Highlights
  • Read Harley-Davidson trouble codes
  • Detailed code descriptions
  • Diagnostic videos
  • Live sensor data
  • Save/retrieve code history
Features
Read full description

Read Harley-Davidson® trouble codes with your iPhone! Code:READ from Vance & Hines makes your iPhone one of the most powerful code readers available. Detailed code descriptions, diagnostic videos for common codes, live sensor data, and the ability to save/retrieve code history bring advanced diagnostic capabilities to you. ("Harley-Davidson" is a registered trademark of Harley-Davidson Motor Company.)

Screenshots

OBD2 Scanner | OBD Auto Doctor4 screens
Code3 screens

Verdict

The call

The clearest difference is review sentiment: Code at 75% against OBD2 Scanner | OBD Auto Doctor's 30%. Code also leads on iOS requirement (10.0 vs 17.0). OBD2 Scanner | OBD Auto Doctor's advantage is rating (4.4 vs 4.0) and ratings volume (6.2K vs 5). On price, update cadence, ads and in-app purchases 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. OBD2 Scanner | OBD Auto Doctor sells 9 in-app purchases, starting at $4.99 per month and Code sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

OBD2 Scanner | OBD Auto Doctor holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 30% of OBD2 Scanner | OBD Auto Doctor's written reviews are positive against 75% of Code's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, Code monthly. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
OBD2 Scanner | OBD Auto Doctor versus Code: the parameters behind the verdict, then further details
ParameterOBD2 Scanner | OBD Auto DoctorCode
PriceFreeFree
Rating4.4 (6.2K ratings) — better4.0 (5 ratings)
Positive reviews30.3% of reviews75.0% of reviews — better
Number of ratings6.2K — better5
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.010.0 — better
Further details — not scored
Size19 MB74 MB
Age rating4+4+
DeveloperCreosysVance & Hines

Customer experience

OBD2 Scanner | OBD Auto Doctor

All ratings6,206 ratings
Positive84.4%
Neutral4.1%
Negative11.5%
Written reviews577 reviews
Positive30.3%
Neutral8.3%
Negative61.4%

Code

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

OBD2 Scanner | OBD Auto Doctor

Reported bugs

4 issues
  • App crashes on launch
  • Fails to detect existing fault codes
  • Subscription issues and inability to cancel
  • Incompatible with certain OBD2 adapters

Requested features

6 requests
  • Add support for more vehicle makes and models
  • Improve Bluetooth/WiFi connectivity
  • Provide more detailed diagnostic information
  • Allow clearing of error codes without subscription
  • Add live data dashboards and graphs
Show 1 more
  • Integrate with vehicle maintenance scheduling

Code

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

OBD2 Scanner | OBD Auto Doctor

Subscriptions8
  • Monthly (legacy)$4.991 Month
  • Personal, monthly$4.991 Month
  • Premium, monthly$5.991 Month
Show 5 more
  • Professional, monthly$6.991 Month
  • Yearly (legacy)$23.991 Year
  • Personal, yearly$23.991 Year
  • Professional, yearly$29.991 Year
  • Premium, annual3 Days trial$29.991 Year
One-time1
  • OBD Auto Doctor Pro (legacy)$29.99
1 purchases

Code

One-time1
  • Code:READ Premium$0.99

Questions

Is OBD2 Scanner | OBD Auto Doctor free?
OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.
Is Code free?
Code is free to download, with in-app purchases available.
Which has better reviews, OBD2 Scanner | OBD Auto Doctor or Code?
OBD2 Scanner | OBD Auto Doctor is rated higher. OBD2 Scanner | OBD Auto Doctor averages 4.4 out of 5 from 6.2K ratings, while Code averages 4.0 from 5 ratings.
Do OBD2 Scanner | OBD Auto Doctor or Code have ads?
Neither OBD2 Scanner | OBD Auto Doctor nor Code shows ads.
Which is updated more often, OBD2 Scanner | OBD Auto Doctor or Code?
OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and Code monthly. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on October 16, 2026 and Code on October 12, 2026.

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