Comparison

CarKeeper+ 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

CarKeeper+

Transform your basic car into a smart vehicle with this app. It allows your smartphone to act as a digital car key for remote lock/unlock and provides enhanced security by monitoring and recording any shocks, bumps, or unauthorized entry attempts with time and location data.

Highlights
  • Smartphone as digital car key
  • Remote door lock/unlock
  • Shock and bump detection
  • Unauthorized entry alerts
  • Time and location recording
  • Enhanced car security
Read full description

The Carkeeper system’s operation is built on platform composed of main unit module , smart phone, APP and cloud server. This can upgrade basic car to futuristic one enabling driver to interact with his car. The original remote of factory car needs help of phone’s Bluetooth to activate automatic door lock/unlock. Thus driver’s phone becomes metal car key. Apart from factory’s security system, this can offer higher security level. In case of the car if being shocked or bumped, tilted or attempted for entry, it will record all such status with time & location that occurs.

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

CarKeeper+4 screens
OBD2 Car Scanner4 screens

Verdict

The call

The clearest difference is in-app purchases: CarKeeper+ at none against OBD2 Car Scanner's 3. CarKeeper+ also leads on ads (none vs shown) and rating (4.0 vs 3.8). OBD2 Car Scanner's advantage is ratings volume (1.3K vs 1). On price, review sentiment, update cadence 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 Car Scanner sells 3 in-app purchases, starting at $4.99 per 7 days. CarKeeper+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CarKeeper+ holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: OBD2 Car Scanner has 1.3K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of CarKeeper+'s written reviews are positive against 4% of OBD2 Car Scanner's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

CarKeeper+ ships an update every 6 weeks, OBD2 Car Scanner every 5 weeks. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
CarKeeper+ versus OBD2 Car Scanner: the parameters behind the verdict, then further details
ParameterCarKeeper+OBD2 Car Scanner
PriceFreeFree
Rating4.0 (1 ratings) — better3.8 (1.3K ratings)
Positive reviews0.0% of reviews3.6% of reviews — better
Number of ratings11.3K — better
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size29 MB76 MB
Age rating4+4+
DeveloperIVTES LTD.Digital Car Key LLC

Customer experience

CarKeeper+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

OBD2 Car Scanner

All ratings1,329 ratings
Positive70.2%
Neutral3.5%
Negative26.3%
Written reviews139 reviews
Positive3.6%
Neutral0.0%
Negative96.4%

Bugs and requests

CarKeeper+

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

CarKeeper+

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 CarKeeper+ free?
CarKeeper+ 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, CarKeeper+ or OBD2 Car Scanner?
CarKeeper+ is rated higher. CarKeeper+ averages 4.0 out of 5 from 1 ratings, while OBD2 Car Scanner averages 3.8 from 1.3K ratings.
Do CarKeeper+ or OBD2 Car Scanner have ads?
OBD2 Car Scanner shows ads; CarKeeper+ does not.
Which is updated more often, CarKeeper+ or OBD2 Car Scanner?
CarKeeper+ ships an update every 6 weeks, and OBD2 Car Scanner every 5 weeks. Most recently, CarKeeper+ was updated on October 17, 2026 and OBD2 Car Scanner on October 21, 2026.

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