Comparison

ZDOBD vs OBD2 Car Scanner

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

Head to head
About

ZDOBD

This diagnostic tool connects to portable diesel vehicle devices via Bluetooth to perform comprehensive vehicle checks. It allows users to view ECU information, diagnose and clear faults, monitor real-time data, and conduct specific tests like DPF regeneration.

Highlights
  • Bluetooth connectivity
  • ECU version information
  • Vehicle fault diagnosis and clearing
  • Real-time data flow monitoring
  • DPF regeneration
  • SCR testing
Features
Read full description

EPS001, a portable diesel vehicle diagnosis device, needs to be used with a cell phone, already supports IOS system,using bluetooth transmission mode. EPS001 can simultaneously perform communication testing on vehicles equipped with Cummins engine series, as well as vehicles in the United States and Europe, etc. It can view ECU version information, query vehicle maintenance faults, clear vehicle malfunctions, read real-time vehicle operation data flow, DPF regeneration, SCR test and other functions.

About

OBD2 Car Scanner

Diagnose your car's engine and transmission with real-time data, customizable dashboards, and emissions readiness checks. This app connects to your vehicle's OBD2 system via Wi-Fi or Bluetooth for comprehensive maintenance and performance insights.

Highlights
  • Comprehensive diagnostics
  • Customizable dashboard
  • Real-time monitoring
  • Emissions readiness check
  • ECU self-monitoring test
  • HUD mode
Features
Read full description

OBD2 Car Scanner is designed to provide comprehensive diagnostics, real-time data monitoring, and maintenance guidance for your vehicle. It connects to your car’s OBD2 engine management system via Wi-Fi or Bluetooth, offering seamless integration with a range of compatible devices such as ELM327 adapters, Veepeak scanners, and more. OBD2 Car Scanner is the key to unlocking a world of benefits for your vehicle’s maintenance and performance. See how our app can revolutionize your driving experience: Comprehensive Diagnostics: Instantly access detailed information about your car’s engine and transmission, allowing you to quickly troubleshoot any issues and ensure optimal performance. Customizable Dashboard: Personalize your dashboard with custom gauges and graphs, providing you with the data that matters most to you at a glance. Real-Time Monitoring: Stay informed about your vehicle’s health with real-time data from sensors, allowing you to address potential issues before they become serious. Emissions Readiness: Easily determine if your vehicle is ready for emissions testing, saving you time and hassle during inspections. ECU Self-Monitoring Test: Utilize advanced diagnostics to perform self-monitoring tests on your vehicle’s ECU, allowing you to troubleshoot and resolve issues with confidence. Wide Compatibility: Enjoy seamless compatibility with a wide range of vehicles manufactured after 1996, ensuring you can use our app with confidence regardless of your car’s make or model. HUD Mode: Experience unparalleled convenience with our HUD mode, which allows you to project vital data directly onto your windshield for effortless monitoring while you drive. With OBD2 Car Scanner, you’ll have all the tools you need to take control of your vehicle’s maintenance and performance, saving you time, money, and frustration in the long run. Unlock your car’s full potential today! OBD2 Car Scanner is an application that allows car owners to read and diagnose their vehicle’s internal systems using the OBD 2 (On-Board Diagnostic) system. The app is compatible with a variety of OBD 2 scanners, including FixD OBD, Bluedriver OBD, Torque OBD, Torque Pro, Veepeak OBD, ELM 327, OBD Doctor, OBD Fusion, and Carly OBD. And all car brands: Citroën, Jaguar, Aston Martin, Hyundai, Bugatti, Kia, Maserati, Bentley, Subaru, Renault, Lamborghini, Mitsubishi, Porsche, Chevrolet, Fiat, Volvo, Mini, GMC, Smart, Tesla, Honda, Audi, Ford, Land Rover, Peugeot, Buick, Lexus, Alfa Romeo, Infiniti, Rolls-Royce, Skoda, Mazda, Volkswagen, Nissan, Jeep, McLaren, BMW, Mercedes-Benz, Toyota, Acura, Suzuki, Chrysler, Opel, Lotus, Daihatsu, Pagani, Seat, SsangYong, Lancia, Dacia, MG, Maybach, Ram, Hummer, Genesis, Alpine, Aston Martin, .. and many more You can upgrade to Premium with a one-time payment or purchase subscription options: - a monthly subscription (which comes with a 3-day free trial). - a weekly subscription – Payment will be charged to iTunes Account at confirmation of purchase. – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://digitalcarkeyllc.com/privacy-policy Terms of Service: https://digitalcarkeyllc.com/terms-of-service

Screenshots

ZDOBD3 screens
OBD2 Car Scanner4 screens

Verdict

The call

The clearest difference is rating: OBD2 Car Scanner at 3.8 against ZDOBD's 2.0. OBD2 Car Scanner also leads on ratings volume (1.3K vs 4). ZDOBD's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, review sentiment, update cadence and monetization model 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 Car Scanner sells 3 in-app purchases, starting at $4.99 per 7 days. ZDOBD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBD2 Car Scanner holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: OBD2 Car Scanner has 1.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of ZDOBD's written reviews are positive against 4% of OBD2 Car Scanner's.

UpkeepUpdate frequency

ZDOBD ships an update monthly, OBD2 Car Scanner every 5 weeks. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
ZDOBD versus OBD2 Car Scanner: the parameters behind the verdict, then further details
ParameterZDOBDOBD2 Car Scanner
PriceFreeFree
Rating2.0 (4 ratings)3.8 (1.3K ratings) — better
Positive reviews0.0% of reviews3.8% of reviews — better
Number of ratings41.3K — better
Update frequencyMonthly — betterEvery 5 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.0 — better
Further details — not scored
Size22 MB76 MB
Age rating4+4+
Developer深圳市正德友邦科技有限公司Digital Car Key LLC

Customer experience

ZDOBD

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

OBD2 Car Scanner

All ratings1,329 ratings
Positive70.2%
Neutral3.5%
Negative26.3%
Written reviews132 reviews
Positive3.8%
Neutral0.0%
Negative96.2%

Bugs and requests

ZDOBD

Not enough reviews yet to summarise bugs or requests.

OBD2 Car Scanner

Reported bugs

3 issues
  • App crashes frequently
  • Unable to register device
  • Inaccurate diagnostic readings

Requested features

2 requests
  • Free trial option
  • Compatibility with more vehicle models

In-app purchases

None

ZDOBD

No in-app purchases

3 purchases

OBD2 Car Scanner

Subscriptions2
  • Weekly Premium Subscription$4.997 Days
  • Monthly Premium Subscription3 Days trial$11.991 Month
One-time1
  • Lifetime Premium$49.99

Questions

Is ZDOBD free?
ZDOBD is free to download, with no in-app purchases.
Is OBD2 Car Scanner free?
OBD2 Car Scanner is free to download, with in-app purchases available.
Which has better reviews, ZDOBD or OBD2 Car Scanner?
OBD2 Car Scanner is rated higher. ZDOBD averages 2.0 out of 5 from 4 ratings, while OBD2 Car Scanner averages 3.8 from 1.3K ratings.
Do ZDOBD or OBD2 Car Scanner have ads?
OBD2 Car Scanner shows ads; ZDOBD does not.
Which is updated more often, ZDOBD or OBD2 Car Scanner?
ZDOBD ships an update monthly, and OBD2 Car Scanner every 5 weeks. Most recently, ZDOBD was updated on September 8, 2026 and OBD2 Car Scanner on September 22, 2026.

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