Comparison

CARAPP vs OBD2 Scanner | OBD Auto Doctor

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

Head to head
About

CARAPP

This utility app connects to your car's hardware to retrieve diagnostic trouble codes and security information. It displays real-time data like oil consumption and provides alerts for malfunctions, temperature, speed, and maintenance reminders, helping car owners manage costs.

Highlights
  • Retrieve diagnostic trouble codes
  • Display real-time oil consumption
  • Clear trouble code information
  • Vehicle malfunction alerts
  • Maintenance and shift reminders
  • Real-time vehicle security information
Features
Read full description

CARAPP V200 is working with IOS system(support iPhone 4s or later with bluetooth 4.0 or later). Smart phone specially designed for car owners or DIYs. Quicky retrieves vehicle Diagnostic Trouble Codes and other vehicle security information. Displays real time oil consumption data,helps lowering maintenance cost. Clears trouble code information and saves maintenance costs. Real time vehicle trouble alerts include vehicle malfunction,high water temperature,fatigue driving,over-speed, maintenance reminding,shift reminding. Please note this software is used with our hardware. It cannot work with other device. Contact email: support@autophix.com

About

OBD2 Scanner | OBD Auto Doctor

Transform your iPhone into a car diagnostic tool. Read and clear engine trouble codes, monitor live engine data, and check emissions readiness with a compatible OBD2 dongle.

Highlights
  • Read and clear diagnostic trouble codes (DTCs)
  • Monitor live engine data
  • Check emissions readiness
  • View freeze-frame data
  • Create custom sensor dashboards
  • Works with compatible OBD2 dongles
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

Screenshots

CARAPP4 screens
OBD2 Scanner | OBD Auto Doctor4 screens

Verdict

The call

The clearest difference is rating: OBD2 Scanner | OBD Auto Doctor at 4.4 against CARAPP's 1.5. OBD2 Scanner | OBD Auto Doctor also leads on review sentiment (30% vs 0%) and ratings volume (6.2K vs 2). CARAPP's advantage is in-app purchases (none vs 9) and iOS requirement (6.0 vs 17.0). On price, update cadence, 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

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. CARAPP asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBD2 Scanner | OBD Auto Doctor holds the better App Store score, 4.4 against 1.5. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of CARAPP's written reviews are positive against 30% of OBD2 Scanner | OBD Auto Doctor's.

UpkeepUpdate frequency

CARAPP ships an update monthly, OBD2 Scanner | OBD Auto Doctor every 3 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard6 real differences · 4 level
CARAPP versus OBD2 Scanner | OBD Auto Doctor: the parameters behind the verdict, then further details
ParameterCARAPPOBD2 Scanner | OBD Auto Doctor
PriceFreeFree
Rating1.5 (2 ratings)4.4 (6.2K ratings) — better
Positive reviews0.0% of reviews30.3% of reviews — better
Number of ratings26.2K — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS6.0 — better17.0
Further details — not scored
Size43 MB19 MB
Age rating4+4+
DeveloperAutophix Tech Co., LtdCreosys

Customer experience

CARAPP

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

OBD2 Scanner | OBD Auto Doctor

All ratings6,230 ratings
Positive84.4%
Neutral4.1%
Negative11.4%
Written reviews577 reviews
Positive30.3%
Neutral8.3%
Negative61.4%

Bugs and requests

CARAPP

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

CARAPP

No 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

Questions

Is CARAPP free?
CARAPP is free to download, with no in-app purchases.
Is OBD2 Scanner | OBD Auto Doctor free?
OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.
Which has better reviews, CARAPP or OBD2 Scanner | OBD Auto Doctor?
OBD2 Scanner | OBD Auto Doctor is rated higher. CARAPP averages 1.5 out of 5 from 2 ratings, while OBD2 Scanner | OBD Auto Doctor averages 4.4 from 6.2K ratings.
Do CARAPP or OBD2 Scanner | OBD Auto Doctor have ads?
Neither CARAPP nor OBD2 Scanner | OBD Auto Doctor shows ads.
Which is updated more often, CARAPP or OBD2 Scanner | OBD Auto Doctor?
CARAPP ships an update monthly, and OBD2 Scanner | OBD Auto Doctor every 3 weeks. Most recently, CARAPP was updated on November 1, 2026 and OBD2 Scanner | OBD Auto Doctor on November 6, 2026.

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