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Best Diagnostic Tool To Check Engine Light Apps

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated October 2026

From beginner-friendly picks to power-user tools, our diagnostic tool to check engine light list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.

Compare top Diagnostic Tool To Check Engine Light Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Car Scanner ELM OBD2Car Scanner ELM OBD2Free4.8★ (33K)YesYesOct 2026
2OBD2 Car Scanner - EOBD FacileOBD2 Car Scanner - EOBD FacileFree4.6★ (5.1K)NoYesOct 2026
3Car Scanner ELM OBD2 - TorqueCar Scanner ELM OBD2 - TorqueFree4.4★ (17)YesYesOct 2026
4BlueDriver OBD2 Scan ToolBlueDriver OBD2 Scan ToolFree4.6★ (14K)NoNoOct 2026
5RepairSolutions2RepairSolutions2Free4.8★ (38K)NoYesOct 2026
6OBD2 Scanner | OBD Auto DoctorOBD2 Scanner | OBD Auto DoctorFree4.4★ (6.2K)NoYesOct 2026
7FIXD OBD2 ScannerFIXD OBD2 ScannerFree4.6★ (26K)NoYesOct 2026
8VroomScan - Engine DiagnosisVroomScan - Engine DiagnosisFree—NoNoAug 2026

Top Picks for Diagnostic Tool To Check Engine Light

Car Scanner ELM OBD2#1

Car Scanner ELM OBD2 by Stanislav Svistunov

The best OBD2 diagnostic tool!
Editor's Choice
🔧 Utilities
4.8😊(33K ratings)
FreeAdsIn-App Purchases
Car Scanner ELM OBD2 screenshot 1
Car Scanner ELM OBD2 screenshot 2
Car Scanner ELM OBD2 screenshot 3
Car Scanner ELM OBD2 screenshot 4
Car Scanner ELM OBD2 screenshot 5
Car Scanner ELM OBD2 screenshot 6

Monitor your car's performance, diagnose engine issues, and view sensor data in real-time. Customize your dashboard with gauges and charts, and reset fault codes. Supports a wide range of vehicles and offers advanced features for specific car brands.

What We Love

  • 🚀 Works great with cheap OBD2 adapters
  • 👍 Highly customizable dashboard
  • 👍 Comprehensive sensor data
  • 👍 Helpful error code lookup
  • 👍 Frequent updates
  • 👍 Affordable pro version
  • 👍 Supports many vehicle makes/models

Room to Improve

  • 🐛 Occasional connection issues
  • 🐛 Incorrect sensor readings for some vehicles
  • 🐛 Crashes or freezes on some devices
  • 🔋 Drains battery when left running
OBD2 Car Scanner - EOBD Facile#2

OBD2 Car Scanner - EOBD Facile by OUTILS OBD FACILE SARL

Torque & ELM327 OBD Diagnostic
Strong Contender
🔧 Utilities
4.6😐(5.1K ratings)
FreeIn-App Purchases
OBD2 Car Scanner - EOBD Facile screenshot 1
OBD2 Car Scanner - EOBD Facile screenshot 2
OBD2 Car Scanner - EOBD Facile screenshot 3
OBD2 Car Scanner - EOBD Facile screenshot 4
OBD2 Car Scanner - EOBD Facile screenshot 5
OBD2 Car Scanner - EOBD Facile screenshot 6

Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.

What We Love

  • 👍 Helpful for diagnosing issues
  • 🚀 Easy to use and connect
  • 💡 Provides useful vehicle data
  • 🔍 Able to read and clear error codes

Room to Improve

  • 💰 Expensive for full functionality
  • 🔒 Requires paid upgrade to access key features
  • 🐛 Connectivity issues and app crashes
  • 🚫 Limited functionality in free version
Car Scanner ELM OBD2 - Torque#3

Car Scanner ELM OBD2 - Torque by SINAN ATAKUL

Fixd & Check Engine Diagnostic
Worth Considering
🔧 Utilities
4.4(17 ratings)
FreeAdsIn-App Purchases
Car Scanner ELM OBD2 - Torque screenshot 1
Car Scanner ELM OBD2 - Torque screenshot 2
Car Scanner ELM OBD2 - Torque screenshot 3
Car Scanner ELM OBD2 - Torque screenshot 4
Car Scanner ELM OBD2 - Torque screenshot 5
Car Scanner ELM OBD2 - Torque screenshot 6

Transform your iPhone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live vehicle sensor data, and understand check engine light warnings. Works with most vehicles manufactured since 1996 using standard OBD2 adapters.

More Diagnostic Tool To Check Engine Light apps to explore

FAQ about Diagnostic Tool To Check Engine Light

What are the best diagnostic tool to check engine light apps for iPhone?
Car Scanner ELM OBD2 tops our diagnostic tool to check engine light apps ranking as of October 2026, with a 4.8-star average from 33K App Store ratings, and it's free to download.
Yes — 20 of the top diagnostic tool to check engine light apps we rank are free to download, including Car Scanner ELM OBD2 and OBD2 Car Scanner - EOBD Facile.
Car Scanner ELM OBD2 shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ diagnostic tool to check engine light apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.