Best Car Diagnostic Apps

221+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated May 2026

With an average user rating of 4.5★, the car diagnostic category is one of the App Store's strongest. Browse all 221+ apps we track, sorted so the most loved ones surface first.

Top Picks for Car Diagnostic

RepairSolutions2#1

RepairSolutions2 by Innova Electronics

Editor's Choice
🔧 Utilities
4.8😊(33K ratings)
FreeIn-App Purchases
RepairSolutions2 screenshot 1
RepairSolutions2 screenshot 2
RepairSolutions2 screenshot 3
RepairSolutions2 screenshot 4
RepairSolutions2 screenshot 5
RepairSolutions2 screenshot 6

RepairSolutions2 offers valuable vehicle care and repair information for car owners, DIYers, and technicians. It pairs with OBD2 scanners to provide a comprehensive database with verified fixes, schedule repairs, and offers free vehicle care info. Get expert automotive help in one app.

What We Love

  • 👍 Easy to use
  • 🚀 Efficient and fast
  • 💡 Helpful diagnostic features
  • 🤑 Good value for money

Room to Improve

  • 🐛 Connectivity issues
  • 🔍 Limited functionality
  • 🕰️ Slow app performance
Car Scanner ELM OBD2#2

Car Scanner ELM OBD2 by Stanislav Svistunov

The best OBD2 diagnostic tool!
Strong Contender
🔧 Utilities
4.8😊(31K 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

What We Love

  • 🚀 Works great with cheap OBD2 adapters
  • 👍 Highly customizable dashboard
  • 👍 Comprehensive sensor data
  • 👍 Helpful error code lookup

Room to Improve

  • 🐛 Occasional connection issues
  • 🐛 Incorrect sensor readings for some vehicles
  • 🐛 Crashes or freezes on some devices
FIXD OBD2 Scanner#3

FIXD OBD2 Scanner by FIXD Automotive Inc

Clear Your Check Engine Light
Worth Considering
🔧 Utilities
3.7😐(107 ratings)
FreeAdsIn-App Purchases
#53in Utilities
FIXD OBD2 Scanner screenshot 1
FIXD OBD2 Scanner screenshot 2
FIXD OBD2 Scanner screenshot 3
FIXD OBD2 Scanner screenshot 4
FIXD OBD2 Scanner screenshot 5
FIXD OBD2 Scanner screenshot 6

An auto diagnostic application that decodes car issues into layman's terms, alerts you to maintenance needs, and now offers FIXD Premium for expert support from mechanics. Ensure your car's health and longevity with FIXD.

What We Love

  • 👍 Easy to use
  • 🚀 Quickly identifies problems
  • 💰 Saves money on mechanics
  • 🔍 Provides detailed diagnostic information

Room to Improve

  • 🔒 Requires subscription for full functionality
  • 💰 Expensive premium subscription
  • 🤖 Inconsistent performance across vehicles

More Car Diagnostic apps to explore

4
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
Fear No Fix™
Free

BlueDriver is a premium OBD2 scan tool used by professionals and vehicle owners to diagnose and fix issues. Features include generating repair reports, scanning trouble codes, and offering enhanced diagnostics for various car models. Visit the website to see what users are saying and connect with the community on social media.

📊 Productivity
(13K)
5
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
Torque ELM327 Diagnostic Tool
Free

An ultimate OBD2 Bluetooth car scanner app that helps diagnose engine and transmission issues by connecting to an ELM327 adapter. View and clear fault codes, see real-time data, and track trip records with this powerful tool. Check compatibility with your vehicle and access accurate diagnostics to take control of your car maintenance.

🔧 Utilities
(4.8K)
6
My Mechanic : Car Repair
My Mechanic : Car Repair
My Mechanic : Car Repair
#1 AI Auto Diagnostic Tool
Free
🔧 Utilities
(0)
7
Car Scanner | OBD Auto Doctor
Car Scanner | OBD Auto Doctor
Car Scanner | OBD Auto Doctor
OBD2 diagnostics for ELM 327
Free

Turn your mobile phone into a powerful automotive car scanner with this leading OBD2 car diagnostics tool. Quickly read diagnostic trouble codes, track vehicle data in real-time, and monitor sensor data to enhance your car knowledge and performance. See https://www.obdautodoctor.com/help/articles/obd2-compatible-cars/ for compatible vehicles.

🔧 Utilities
(6.1K)
8
OBD JScan
OBD JScan
OBD JScan
by Piotr Bialic
Free

OBD JScan is a powerful application designed for Jeep owners to access and control their vehicles' onboard diagnostic information, providing detailed insights and functionality for maintenance and troubleshooting. Stay connected with your Jeep like never before - download OBD JScan now!

🔧 Utilities
(76)
9
Carly — OBD2 car scanner
Carly — OBD2 car scanner
Carly — OBD2 car scanner
Diagnose, Code and Service
Free

Access diagnostics, live data, and repair guides for your car with this versatile OBD2 solution that works for a wide range of car brands. Empower yourself with features like fault code reading, maintenance guides, live data monitoring, and hidden feature customization. Unleash your inner car hero with Carly!

📊 Productivity
(7.9K)
10
TopGuru
TopGuru
TopGuru
by HK TOPDON TECHNOLOGY Co., LIMITED
Free
🔧 Utilities
(346)
11
Carista OBD2
Carista OBD2
Carista OBD2
Code, Service, Diagnose cars
Free

Access a mobile DIY car mechanic with the Carista App – code, diagnose warning lights, monitor live data, and service your car easily. Save time and money on workshop visits, unlock hidden features, and customize your car's behavior with a wide range of supported car brands. Visit https://carista.com/supported-cars to check compatibility.

🔧 Utilities
(3.8K)
12
DriveVerse: AI Car Diagnostics
DriveVerse: AI Car Diagnostics
DriveVerse: AI Car Diagnostics
Diagnose car sounds with AI
Free

This application helps drivers diagnose car problems by recording unusual sounds, tracking changes, and providing intelligent analysis over time, giving clearer answers as patterns emerge. By using AI sound diagnostics and issue tracking, drivers can gain confidence in understanding their car's issues and make smarter decisions about maintenance and repairs.

🔧 Utilities
(4)
13
ZUS - Save Car Expenses
ZUS - Save Car Expenses
ZUS - Save Car Expenses
ZUS Smart Driving Assistant
Free

Track your car expenses, improve your driving habits, and earn cash rewards with this smart driving assistant app. Save money on maintenance and fuel while enhancing your overall driving experience. Download now to start saving!

🔧 Utilities
(5.2K)
14
OBD Fusion
OBD Fusion
OBD Fusion
OBD2 scan tool & diagnostics
$9.99

Access real-time data from your car's onboard diagnostic system with this powerful OBD2 scan tool. Monitor and analyze your vehicle's performance, troubleshoot issues, and make informed maintenance decisions. Get insights and stay on top of your car's health with OBD Fusion now!

✈️ Travel
(31)
15
OBDLink
OBDLink
OBDLink
by OBD Solutions LLC
Free

Turn your phone or tablet into a powerful diagnostic scan tool with this app, designed exclusively for use with OBDLink MX, CX, and MX WiFi adapters. Enjoy features such as checking and clearing trouble codes, real-time data display, emissions readiness, fuel economy estimation, customizable dashboards, and more. Get detailed insights into your vehicle's performance effortlessly!

✈️ Travel
(12K)
16
ThinkDiag+
ThinkDiag+
ThinkDiag+
by THINKCAR INC
Free

ThinkDiag is an innovative vehicle diagnostic tool designed for technicians, repair shops, and DIYers, offering OE level functions, full-function OBD II diagnosis, maintenance reset, and communication within the ThinkDiag community. It supports various devices and over 100 vehicle brands, accessible through a smartphone app. Contact for more information at www.mythinkcar.com or service@mythinkcar.com.

🔧 Utilities
(4K)
17
MECH AI: Diagnostic & Repair
MECH AI: Diagnostic & Repair
MECH AI: Diagnostic & Repair
Mechanic in Your Pocket
Free

Access an AI-powered mobile assistant for all your car repair needs, from fixing and tuning to finding spare parts. Get expert guidance, manuals, diagnostics, and a vast parts database in one handy app. Save time and money on your repairs, suitable for beginners and experienced mechanics alike. Join the renovation journey now!

🔧 Utilities
(86)
18
CARFAX Car Care
CARFAX Car Care
CARFAX Car Care
Track Maintenance & Repairs
Free

Track maintenance records, schedule service reminders, and access car history reports for your vehicles all in one place with this helpful application. Never miss an oil change or service appointment again - keep your vehicles running smoothly with ease!

🌟 Lifestyle
(122K)
19
OBDeleven – OBD2 car scanner
OBDeleven – OBD2 car scanner
OBDeleven – OBD2 car scanner
Diagnostics, service & coding
Free

Unlock the full potential of your car with an innovative diagnostic application. Easily scan and analyze your vehicle's data for optimal performance.

🔧 Utilities
(1.1K)
20
TOPDON CarPal
TOPDON CarPal
TOPDON CarPal
OBDII Diagnostic Scan Tool
Free

Get instant access to your vehicle's information with this Bluetooth OBDII scan tool, which transforms your phone into a powerful diagnostic device with features like full system diagnosis, 10 modes of OBD2 testing, and 6 special maintenance functions. Download now to diagnose and repair your car with ease.

🔧 Utilities
(28)

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