Comparison

BT1 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

BT1

Decode your vehicle's Check Engine Light and check for recalls or service bulletins. Connect a compatible scanner to your device to gain insights into your car's health and avoid unexpected issues.

Highlights
  • Decode Check Engine Light
  • Check for vehicle recalls
  • Check for Special Service Bulletins
  • Connects via Bluetooth or cable scanner
  • Pairs with iPhone, iPod touch, or iPad
Features
Read full description

Calm Your Auto Woes! One in ten vehicles in the US have the Check Engine Light on. Is yours one of them? Was your vehicle one of the 20 million recalled in 2010? Simply connect our BT1 (Bluetooth) or GL1 (cabled) automotive scanner (sold separately) to your vehicle; pair with your iPhone or iPod touch, or iPad; and remove the risks, and surprises, from driving. - Decode the Check Engine Light - Check for vehicle recalls - Check for Special Service Bulletins Like having your own personal mechanic riding next to you!

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

BT14 screens
OBD2 Car Scanner4 screens

Verdict

The call

The clearest difference is review sentiment: BT1 at 48% against OBD2 Car Scanner's 4%. BT1 also leads on in-app purchases (none vs 3) and ads (none vs shown). OBD2 Car Scanner's advantage is rating (3.8 vs 2.4) and ratings volume (1.3K vs 14). On price 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. BT1 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBD2 Car Scanner holds the better App Store score, 3.8 against 2.4. That said, the two scores are not equally well evidenced: OBD2 Car Scanner has 1.3K ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 48% of BT1'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

BT1 ships an update every 4 months, OBD2 Car Scanner every 5 weeks. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

Scorecard8 real differences · 2 level
BT1 versus OBD2 Car Scanner: the parameters behind the verdict, then further details
ParameterBT1OBD2 Car Scanner
PriceFreeFree
Rating2.4 (14 ratings)3.8 (1.3K ratings) — better
Positive reviews47.7% of reviews — better3.6% of reviews
Number of ratings141.3K — better
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better15.0
Further details — not scored
Size5 MB76 MB
Age rating4+4+
DeveloperGoPoint Technology, IncDigital Car Key LLC

Customer experience

BT1

All ratings14 ratings
Positive28.6%
Neutral7.1%
Negative64.3%
Written reviews86 reviews
Positive47.7%
Neutral4.7%
Negative47.7%

OBD2 Car Scanner

All ratings1,329 ratings
Positive70.2%
Neutral3.5%
Negative26.3%
Written reviews138 reviews
Positive3.6%
Neutral0.0%
Negative96.4%

User reviews

BT1

From 14 App Store ratings

What we love

  • 👍 Easy to use
  • 👍 Works as advertised (sometimes)
  • 👍 Good hardware
  • 👍 Cool technology
  • 👍 Great for basic diagnostics

Room to improve

  • 🐛 Crashes frequently
  • 🐛 Incompatible with newer iOS versions
  • 🐛 Does not detect fault codes accurately
  • 🐛 Limited functionality
  • 🐛 Outdated software

OBD2 Car Scanner

From 1.3K App Store ratings

What we love

  • 👍 Easy to use

Room to improve

  • 🚫 Doesn't work as expected
  • 💰 Expensive subscription
  • 🛑 Difficult to cancel subscription
  • 🤖 Intrusive ads
  • 🔌 Connectivity issues

Bugs and requests

BT1

Reported bugs

25 issues
  • App crashes when scanning vehicle
  • App crashes after 30 seconds
  • App not working anymore
  • Cannot select make/model
  • App not updated for newer vehicles
Show 20 more
  • App not compatible with newer IOS versions
  • Initialization failed error
  • Cannot install app on older devices due to iOS requirements
  • Bluetooth device has trouble connecting
  • App crashes upon setup
  • Blank boxes for make/model selection
  • App freezes and glitches
  • App locks up when entering car data
  • App crashes every time
  • Cannot get past create account screen
  • App crashes only once (user reported)
  • Difficult or time-consuming to connect
  • Http error when connected
  • App crashes when connected
  • Doesn't clear check engine light
  • No data stream info
  • App asks for vehicle info and searches recalls
  • Less functions than cabled version
  • Software too basic
  • Does not clear codes or reset trouble lights

Requested features

8 requests
  • Update app for newer iOS versions
  • Add more vehicle makes/models
  • Improve fault code detection
  • Add live data stream
  • Firmware update for Bluetooth device
Show 3 more
  • More detailed vehicle stats
  • Constant data recording
  • More advanced features

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

BT1

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 BT1 free?
BT1 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, BT1 or OBD2 Car Scanner?
OBD2 Car Scanner is rated higher. BT1 averages 2.4 out of 5 from 14 ratings, while OBD2 Car Scanner averages 3.8 from 1.3K ratings.
Do BT1 or OBD2 Car Scanner have ads?
OBD2 Car Scanner shows ads; BT1 does not.
Which is updated more often, BT1 or OBD2 Car Scanner?
BT1 ships an update every 4 months, and OBD2 Car Scanner every 5 weeks. Most recently, BT1 was updated on October 13, 2026 and OBD2 Car Scanner on October 19, 2026.

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