Comparison

OBD2 Scanner | OBD Auto Doctor vs ANCEL Echo

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

ANCEL Echo

This app offers professional vehicle diagnostics, allowing users to check their car's health, identify malfunctions, and receive maintenance guidance. It provides real-time sensor data and AI services to help users understand and care for their vehicles, saving time and money on repairs.

Highlights
  • OBD functionality
  • Enhanced diagnosis
  • Vehicle maintenance guidance
  • Locate malfunction causes
  • Real-time sensor data monitoring
  • AI services
  • Abnormal warnings
Features
Read full description

ANCEL is a professional vehicle diagnostic tool that provides comprehensive services such as OBD functionality, enhanced diagnosis, and vehicle maintenance, saving users time and money. It allows you to easily check the health status of your vehicle without having to go to a repair shop, quickly locate the cause of vehicle malfunctions, and provide users with comprehensive application services such as AI services and abnormal warnings. Get to know your vehicle better Become more knowledgeable about your vehicle and take good care of it. Gain greater confidence and peace of mind with Echo diagnostic tool and ANCEL App in your pocket. Diagnose and repair with ANCEL Discover why the Check Engine Light is on, provide maintenance guidance and reset the Diagnostic Trouble Codes. Save time and money by diagnosing the root cause without visiting a mechanic. Easily used even for beginners You can easily have professional repair and maintenance knowledge with intelligent by services, it can be easily used even for beginners. Monitor real-time sensor data Maintain the health of the your vehicle by monitoring the engine and various systems in real-time. Improve efficiency and prevent malfunctions.

Screenshots

OBD2 Scanner | OBD Auto Doctor4 screens
ANCEL Echo4 screens

Verdict

The call

The clearest difference is rating: OBD2 Scanner | OBD Auto Doctor at 4.4 against ANCEL Echo's 3.3. OBD2 Scanner | OBD Auto Doctor also leads on ratings volume (6.2K vs 6). ANCEL Echo's advantage is in-app purchases (none vs 9) and update cadence (every 10 days vs every 3 weeks). On price, review sentiment, 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. ANCEL Echo 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 3.3. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 30% of OBD2 Scanner | OBD Auto Doctor's written reviews are positive against 25% of ANCEL Echo's.

UpkeepUpdate frequency

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, ANCEL Echo every 10 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
OBD2 Scanner | OBD Auto Doctor versus ANCEL Echo: the parameters behind the verdict, then further details
ParameterOBD2 Scanner | OBD Auto DoctorANCEL Echo
PriceFreeFree
Rating4.4 (6.2K ratings) — better3.3 (6 ratings)
Positive reviews30.3% of reviews — better25.0% of reviews
Number of ratings6.2K — better6
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.6 — better
Further details — not scored
Size19 MB337 MB
Age rating4+4+
DeveloperCreosysOBDSPACE TECHNOLOGY CO.,LTD

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%

ANCEL Echo

All ratings5 ratings
Positive40.0%
Neutral40.0%
Negative20.0%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

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

ANCEL Echo

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
None

ANCEL Echo

No in-app purchases

Questions

Is OBD2 Scanner | OBD Auto Doctor free?
OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.
Is ANCEL Echo free?
ANCEL Echo is free to download, with no in-app purchases.
Which has better reviews, OBD2 Scanner | OBD Auto Doctor or ANCEL Echo?
OBD2 Scanner | OBD Auto Doctor is rated higher. OBD2 Scanner | OBD Auto Doctor averages 4.4 out of 5 from 6.2K ratings, while ANCEL Echo averages 3.3 from 6 ratings.
Do OBD2 Scanner | OBD Auto Doctor or ANCEL Echo have ads?
Neither OBD2 Scanner | OBD Auto Doctor nor ANCEL Echo shows ads.
Which is updated more often, OBD2 Scanner | OBD Auto Doctor or ANCEL Echo?
OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and ANCEL Echo every 10 days. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on November 1, 2026 and ANCEL Echo on October 30, 2026.

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