Comparison

OBD2 Trouble Code vs OBD2 Scanner ELM327

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

Head to head
About

OBD2 Trouble Code

Instantly look up your car's check engine codes on the go. Access a vast database of OBD2 codes with descriptions and potential causes for all major manufacturers. Save your search history for quick reference.

Highlights
  • OBD2 code lookup
  • Check engine code descriptions
  • Possible cause identification
  • All major manufacturers supported
  • Search history
  • Save results
Features
Read full description

OBD2 Code Guide app to look up your car check engine code on the go, powered by the web's largest database of OBD2 code library. Get the description and the possible cause of the check engine code by searching for the code for all of the major manufacturers and now with quick access to your search history and save results to for use at a later date.

About

OBD2 Scanner ELM327

This app provides comprehensive OBD scanning for vehicles, allowing users to read and clear fault codes from various ECUs, monitor live sensor data, and perform special functions like DPF regeneration and injector coding. It supports over 100 vehicle makes and offers detailed reports and diagnostic assistance.

Highlights
  • Read and delete fault codes from any ECU
  • Monitor over 200 live sensor data points
  • Perform special OBD functions
  • Generate shareable PDF diagnostic reports
  • Check SMOG status for emission tests
  • Reset service/oil lights
  • Track 0-60 and 0-100 timing
Features
Read full description

GaragePro is the perfect OBD Scanning app for automotive enthusiasts, repair shops, and DIYers. Covering 100+ vehicle makes, GaragePro offers you comprehensive OBD coverage such as reading fault codes from all ECUs- Engine, Airbag, ABS, BCM etc., as well as Special functions such as Injector coding, DPF regeneration, Throttle Reset, ABS (Brake) bleeding, Steering angle reset etc. Key Features: OBD2 Scanning: Read and delete fault codes from any module- Engine, ABS, SRS, EPS, BCM and more. GaragePro can read OBD codes from 100s of ECUs across different makes, covering 100,000+ unique DTCs. Live Data Monitoring: Read over 200 live data points from vehicle sensors in real-time, including RPM, speed, coolant temperature, fuel trim etc. as well as vehicle specific live sensor data points. GaragePro OBD2 Scanner also has intuitive graphs and customizable displays, that let your visualize changes in your OBD2 data. You can also export PID readings to Excel or PDF for detailed analyses. Multi-Mode Coverage: Unlock more OBD2 modes than other apps. GaragePro offers access to a plethora of modes/service IDs such as modes 01, 02, 03, 04, 06, 07, 09, 0A, as well as vehicle specific modes for enhanced OBD coverage. Special OBD functions like Injector coding, DPF regeneration, Throttle Reset, ABS (Brake) bleeding, Steering angle reset, Power balance, Fuel Density Reset, Learning Value Reset, Actuation Tests, AC Control Module Reset, Indicator light reset, Brake Pedal Position Sensor learning, Light and Door customizations, etc. Check the app for the full list applicable to your car. PDF report and Support: Get a shareable PDF with code descriptions when scanning a vehicle and share it with your technicians, friends, customers or store it for future comparisons. GaragePro also offers email and chat support to its customers. Smog checks through OBD: Be ready for your vehicle's emission tests by checking SMOG status in the app. Service/Oil reset: GaragePro OBD2 Scanner includes both- Auto and manual methods to reset the Service/Oil lights. Check Engine Light/Dashboard Lights Assistance: Compared to other apps, GaragePro is able to cover not just MIL, but also ABS, airbag, oil level, steering and other warning lights. OBD Freeze Frame data: Read OBD freeze frame data to understand your sensors' state when OBD codes were generated. Track mode: Measure your 0-60, 0-100 timing and see how well you do on the track. Vehicle Compatibility: The GaragePro OBD2 Scanner app works with any vehicle that's compliant with the OBD2 standard (introduced in the USA in 1996). It reads data from 100s of ECUs in cars & bikes, including Engine, ABS, Airbags (SRS), EPS, BCM, Traction Control, Transmission, HVAC, Instrument cluster & more. It is compatible with all American, Japanese, Korean, German, and other European car & bike makes, including but not limited to GM, Toyota, Ford, Lincoln, Buick, Chevrolet , Opel, Nissan, Infinity, Renault, Mercedes, Suzuki, Lexus, Triumph, Hyundai, Kia, Mazda, Honda, Mahindra, Tata, MG, Volkswagen, Audi, Skoda, Seat, BMW and more. For motorcycles, you will need a connecting cable that connects the 16-pin OBD scanner with the bike's OBD port. Bike diagnostics include DTC reading & deletion, live data stream & freeze frame data. OBD Scanner Compatibility: GaragePro OBD2 Scanner works with any Bluetooth OBD Scanner, including most elm327 based OBD scanners. It also works with popular OBD scanners like Vlink, OBDLink, Carista, Veepeak, Viecar, Kiwi and more. GaragePro also has its own OBD2 Scanner that works seamlessly with the app. Please note: The availability of sensor data depends on your vehicle's ECUs. The app can only display information that is provided by your car's systems. Whether you're a car enthusiast seeking performance gains, a mechanic looking to tackle repairs, or a car owner committed to staying informed, GaragePro OBD2 Scanner is the perfect OBD2 diagnostic tool for you. Email support: fix@carpm.in

Screenshots

OBD2 Trouble Code4 screens
OBD2 Scanner ELM3274 screens

Verdict

The call

The clearest difference is rating: OBD2 Scanner ELM327 at 4.3 against OBD2 Trouble Code's 3.3. OBD2 Scanner ELM327 also leads on review sentiment (46% vs 37%). OBD2 Trouble Code's advantage is in-app purchases (none vs 24) and ratings volume (306 vs 19). On price, 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 ELM327 sells 23 in-app purchases, starting at $4.99 per year. OBD2 Trouble Code asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBD2 Scanner ELM327 holds the better App Store score, 4.3 against 3.3. That said, the two scores are not equally well evidenced: OBD2 Trouble Code has 306 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 37% of OBD2 Trouble Code's written reviews are positive against 46% of OBD2 Scanner ELM327's.

Scorecard6 real differences · 4 level
OBD2 Trouble Code versus OBD2 Scanner ELM327: the parameters behind the verdict, then further details
ParameterOBD2 Trouble CodeOBD2 Scanner ELM327
PriceFreeFree
Rating3.3 (306 ratings)4.3 (19 ratings) — better
Positive reviews37.0% of reviews46.2% of reviews — better
Number of ratings306 — better19
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better12.0
Further details — not scored
Size24 MB65 MB
Age rating4+4+
DeveloperHassan BenessafiZymbia Interactive Technologies Private Limited

Customer experience

OBD2 Trouble Code

All ratings306 ratings
Positive47.7%
Neutral24.5%
Negative27.8%
Written reviews73 reviews
Positive37.0%
Neutral13.7%
Negative49.3%

OBD2 Scanner ELM327

All ratings19 ratings
Positive78.9%
Neutral5.3%
Negative15.8%
Written reviews65 reviews
Positive46.2%
Neutral3.1%
Negative50.8%

User reviews

OBD2 Trouble Code

From 306 App Store ratings

What we love

  • 📚 Comprehensive OBD code database
  • 👍 Easy to navigate interface
  • 💡 Helpful for understanding car diagnostic codes
  • ⚡ Useful for mechanical troubleshooting

Room to improve

  • 😤 Forced review requirement before app usage
  • 📺 Excessive ads throughout the app
  • 🔋 High battery consumption
  • 🚫 App won't function without review completion
  • ⚠️ Misleading review-gating mechanism

OBD2 Scanner ELM327

From 19 App Store ratings

What we love

  • ✅ Clears trouble codes
  • ✅ Scans vehicle quickly
  • ✅ Provides real-time data
  • ✅ User-friendly interface
  • ✅ Saves money on repairs

Room to improve

  • ❌ App crashes frequently
  • ❌ Does not load past splash screen
  • ❌ Not responding properly on iPhone
  • ❌ Cannot select new vehicle after changing cars
  • ❌ Fails to buy subscription

Bugs and requests

OBD2 Trouble Code

Reported bugs

6 issues
  • App crashes or won't open without review
  • Ads prevent normal app usage
  • More info button doesn't expand for some codes
  • Incompatibility with certain vehicle models
  • Mislabeled codes (P0450-P0459)
Show 1 more
  • Connection issues with some OBD readers

Requested features

5 requests
  • More detailed code explanations
  • Offline functionality
  • Better navigation for new users
  • Support for codes without letter prefixes
  • Expanded information sections for specific codes

OBD2 Scanner ELM327

Reported bugs

21 issues
  • App stops working
  • App does not load past splash screen
  • App is not responding properly
  • App crashes when trying to buy subscription
  • App starts crashing after a few days
Show 16 more
  • License removed after uninstall/reinstall
  • App does not start after downloading
  • Shows false error codes
  • Requires uninstall to connect
  • App closes and won't open
  • Cannot clear codes after paying for subscription
  • Scanning issue (stops at 4%)
  • App hangs at 5% during scan
  • Freezes or gives an error during scan
  • Most GM PIDs not available
  • Live View Advanced PIDs missing
  • Cannot pull or clear codes
  • Not functional after updates
  • Cannot link to iPhone
  • Not working on multiple car models
  • Service reset states not available after payment

Requested features

8 requests
  • DPF REGEN feature
  • Ability to select new vehicle easily
  • Reactivate perpetual license without reinstalling
  • List of approved scanner devices
  • Support for WiFi adapters on iOS
Show 3 more
  • Add Google ID option for iPhone
  • Fix PIDs missing in Live View Advanced
  • Option to store data locally instead of server

In-app purchases

None

OBD2 Trouble Code

No in-app purchases

23 purchases

OBD2 Scanner ELM327

Subscriptions11
  • AI Scan Summary (Yearly)$4.991 Year
  • Standard - Yearly$9.491 Year
  • Personal Plan$9.991 Year
Show 8 more
  • Lite - Yearly$9.991 Year
  • Standard - Yearly$19.991 Year
  • Advanced - Yearly$23.991 Year
  • Advanced + AI Summary - Yearly$28.991 Year
  • Premium - Yearly$32.991 Year
  • Standard - Yearly$34.991 Year
  • Advanced - Yearly$71.991 Year
  • Advanced - Yearly$99.991 Year
One-time12
  • Lite - Perpetual$17.99
  • Lite - Perpetual$21.99
  • Standard - Perpetual$34.99
Show 9 more
  • Standard - Perpetual$37.99
  • Standard - Perpetual$54.99
  • Lifetime Subsciption$69.99
  • Standard - Perpetual$69.99
  • Advanced - Perpetual2 variants$99.99
  • Advanced - Perpetual$109.99
  • Advanced - Perpetual$129.99
  • Advanced - Perpetual$159.99
  • Advanced - Perpetual$199.99

Questions

Is OBD2 Trouble Code free?
OBD2 Trouble Code is free to download, with no in-app purchases.
Is OBD2 Scanner ELM327 free?
OBD2 Scanner ELM327 is free to download, with in-app purchases available.
Which has better reviews, OBD2 Trouble Code or OBD2 Scanner ELM327?
OBD2 Scanner ELM327 is rated higher. OBD2 Trouble Code averages 3.3 out of 5 from 306 ratings, while OBD2 Scanner ELM327 averages 4.3 from 19 ratings.
Do OBD2 Trouble Code or OBD2 Scanner ELM327 have ads?
Neither OBD2 Trouble Code nor OBD2 Scanner ELM327 shows ads.

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