Best Maddox Code Reader Apps

250+ iOS apps curated and reviewed

3.7 avg rating
20 free apps
Updated August 2026

Out of 250+ maddox code reader apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Maddox Code Reader Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1RepairSolutions2RepairSolutions2Free4.8★ (37K)NoYesSep 2026
2OBD2 Trouble CodeOBD2 Trouble CodeFree3.3★ (297)NoNoAug 2026
3Easy QR Code Reader - ScannerEasy QR Code Reader - ScannerFree4.5★ (1.8K)YesNoAug 2026
4BimmerObd - Link Code ReaderBimmerObd - Link Code ReaderFreeNoYesJul 2026
5QR BAR Code Reader (Maker)QR BAR Code Reader (Maker)Free4.6★ (18)YesNoAug 2026
6Good QR Code ReaderGood QR Code ReaderFree1.0★ (1)NoNoAug 2026
7Code:READCode:READFree4.0★ (5)NoYesMay 2026
8BlueDriver OBD2 Scan ToolBlueDriver OBD2 Scan ToolFree4.6★ (14K)NoNoAug 2026

Top Picks for Maddox Code Reader

RepairSolutions2#1

RepairSolutions2 by Innova Electronic

Editor's Choice
🔧 Utilities
4.8😊(37K ratings)
FreeIn-App Purchases
RepairSolutions2 screenshot 1
RepairSolutions2 screenshot 2
RepairSolutions2 screenshot 3
RepairSolutions2 screenshot 4
RepairSolutions2 screenshot 5
RepairSolutions2 screenshot 6

This app provides comprehensive vehicle care and repair information for car and truck owners, DIYers, and technicians. It offers diagnostic capabilities with compatible OBD2 scanners and a vast database of verified fixes from ASE Master Technicians. Users can also access free vehicle maintenance information and schedule repairs.

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
OBD2 Trouble Code#2

OBD2 Trouble Code by Hassan Benessafi

OBD ll Code Reader Guide
Strong Contender
🔧 Utilities
3.3😞(297 ratings)
Free
OBD2 Trouble Code screenshot 1
OBD2 Trouble Code screenshot 2
OBD2 Trouble Code screenshot 3
OBD2 Trouble Code screenshot 4

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.

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
Easy QR Code Reader - Scanner#3

Easy QR Code Reader - Scanner by Seiji Hashizume

QR Scanner - Fast and Simple
Worth Considering
📊 Productivity
4.5😊(1.8K ratings)
FreeAds
Easy QR Code Reader - Scanner screenshot 1
Easy QR Code Reader - Scanner screenshot 2

Scan QR codes instantly upon launching the app. Easily open URLs, emails, and other content with a single tap. Features include a flashlight for low-light scanning and automatic saving of scan history.

What We Love

  • 👍 Easy to use
  • 🚀 Efficient scanning
  • 💡 Useful QR code reader
  • 🔒 Secure and private

Room to Improve

  • 🐛 Occasional crashes or issues
  • ⚠️ Requires mandatory reviews

More Maddox Code Reader apps to explore

4
BimmerObd - Link Code Reader
BimmerObd - Link Code Reader
BimmerObd - Link Code Reader
Read fault codes & live data
Free
🔧 Utilities
(0)
5
QR BAR Code Reader (Maker)
QR BAR Code Reader (Maker)
QR BAR Code Reader (Maker)
QRCode Scanner
Free

This utility app quickly scans QR codes using your device's camera. It automatically recognizes codes, directing you to web pages or displaying plain text and phone number information. The scanner works without requiring manual clicks.

Automatic QR code scanningDirects to web pagesDisplays text and phone numbers
🔧 Utilities
(18)
ad-supported
6
Good QR Code Reader
Good QR Code Reader
Good QR Code Reader
by MY AR UNIPESSOAL LDA.
Free

This utility app quickly scans QR codes from printed materials using your device's camera. It automatically opens recognized URLs in an integrated browser and can also generate QR codes from text.

Fast QR code recognitionAccurate QR code scanningEmbedded browser
🔧 Utilities
(1)
free
7
Code:READ
Code:READ
Code:READ
by V&H Performance, LLC
Free

Diagnose Harley-Davidson motorcycle issues directly from your iPhone. Access detailed code descriptions, view diagnostic videos, and monitor live sensor data. Save and retrieve your code history for advanced troubleshooting.

Read Harley-Davidson trouble codesDetailed code descriptionsDiagnostic videos
🔧 Utilities
(5)
free with in-app purchases
8
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
Fear No Fix™
Free

This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.

Read and clear trouble codes (Check Engine, ABS, etc.)Generate professional-grade Repair ReportsAccess Mode 6 and smog readiness data
📊 Productivity
(14K)
free with in-app purchases
9
Simple QR/Barcode Reader
Simple QR/Barcode Reader
Simple QR/Barcode Reader
Easy QR code Scanner
Free

This app quickly and accurately scans QR codes and barcodes using your smartphone's camera. It offers simple operation, saves scan history, and provides relevant actions based on scanned content. Advertisements can be removed with a purchase.

Fast and accurate scanningScan from photosSimple one-tap operation
🔧 Utilities
(256)
free with in-app purchases
10
QR Scanner and Code Reader App
QR Scanner and Code Reader App
QR Scanner and Code Reader App
Barcode - Check Product Price
Free

Instantly scan QR codes and barcodes to access product prices and detailed information. Revolutionize how you interact with products by quickly retrieving nutritional facts and current pricing.

Scan QR codes and barcodesAccess product pricesView detailed product information
🔧 Utilities
(17)
free with in-app purchases
11
Aztec Reader
Aztec Reader
Aztec Reader
by Primesoft Polska Sp. z o. o.
Free

This utility allows mobile devices to quickly read Aztec codes, even in challenging conditions. It offers seamless integration into existing software, making it a unique market solution.

Reads Aztec codesFast scanningWorks in poor conditions
🔧 Utilities
(1)
free
12
GeekOBD-OBD2 Code Reader
GeekOBD-OBD2 Code Reader
GeekOBD-OBD2 Code Reader
Check Engine, Live Data, DTC
Free

This app connects to your car's diagnostic adapter to provide real-time vehicle data. Monitor fuel consumption, diagnose faults, and receive timely warnings for potential issues. It also offers customizable displays and driving habit analysis.

Real-time vehicle dataFault diagnosis and readingFuel consumption monitoring
🗺️ Navigation
(2)
free with in-app purchases
13
Barcode Scanners
Barcode Scanners
Barcode Scanners
by Cognex Corporation
Free

This app offers robust barcode scanning capabilities, supporting over 30 different types including QR, UPC, and Data Matrix. It provides powerful parsing for industry-standard formats like driver's licenses and GS1 codes, simplifying data extraction.

Scan over 30 barcode typesQR code scanningUPC scanning
📊 Productivity
(810)
free
14
1D/2D Code Reader
1D/2D Code Reader
1D/2D Code Reader
by Tomoyuki Samoto
Free
🔧 Utilities
(0)
15
QR Code Reader - Pro
QR Code Reader - Pro
QR Code Reader - Pro
Simple QR Code Reader
Free

This utility app quickly scans QR codes to open URLs, emails, phone numbers, or copy text. It features a simple interface with no extra functions and includes an LED light option for scanning in low light.

Scan QR codesOpen URLs in browserOpen emails in mail app
🔧 Utilities
(1)
ad-supported
16
OBD2 Enhance Trouble Code Lite
OBD2 Enhance Trouble Code Lite
OBD2 Enhance Trouble Code Lite
Find DTCs Definition and Cause
Free

This app provides definitions and potential causes for On-Board Diagnostics (OBD) trouble codes. It covers a wide range of generic and manufacturer-specific codes for numerous vehicle models, helping users understand and potentially fix error codes.

DTC definitions from workshop manualsPossible causes for error codesCovers 73 vehicle models
🔍 Reference
(7)
ad-supported
17
Autmet | OBD2 Scanner
Autmet | OBD2 Scanner
Autmet | OBD2 Scanner
OBD2 scanner & car diagnostic
Free

This diagnostic tool connects to your vehicle's OBD data via a Bluetooth device. It allows you to read various ECU data and supports common OBD-II protocols.

Reads vehicle ECU dataBluetooth OBD device compatibleSupports OBD-II protocols
🔧 Utilities
(1)
free
18
QR Code Scanner: Scan all Code
QR Code Scanner: Scan all Code
QR Code Scanner: Scan all Code
by truong nguyen xuan
Free

Quickly generate and scan QR codes and barcodes. Supports various formats and offers instant results. Includes a document brightener for low-light readability. Create, scan, and share with ease.

QR code generationBarcode scanningMultiple format support
🔧 Utilities
(2)
ad-supported
19
OBD2 AI SKANR: Car Scanner ELM
OBD2 AI SKANR: Car Scanner ELM
OBD2 AI SKANR: Car Scanner ELM
ELM 327 OBD 2 Engine Codes DTC
Free
🔧 Utilities
(0)
20
VinReader by Abrites
VinReader by Abrites
VinReader by Abrites
by Abrites Ltd.
Free

This tool reads vehicle identification numbers and mileage from various modules via an OBDII port. It cross-references VINs with stolen vehicle databases for security and detects mileage tampering. Compatible with most car brands, it generates comprehensive reports quickly.

Read VINRead mileage from modulesStolen vehicle database check
🔧 Utilities
(5)
free

FAQ about Maddox Code Reader

What are the best maddox code reader apps for iPhone?
RepairSolutions2 tops our maddox code reader apps ranking as of August 2026, with a 4.8-star average from 37K App Store ratings, and it's free to download.
Yes — 20 of the top maddox code reader apps we rank are free to download, including RepairSolutions2 and OBD2 Trouble Code.
RepairSolutions2 has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ maddox code reader apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
RepairSolutions2 offers a comprehensive automotive repair database with verified fixes from ASE Master Technicians. It provides vehicle care information, diagnostic capabilities when paired with compatible OBD2 scanners, and allows users to find and purchase necessary parts. The app also includes features for tracking scheduled maintenance and scheduling repairs.
Key features include looking up DTC code definitions with ASE-verified fixes, performing complete vehicle scans, reading/erasing DTC codes, accessing a customizable LIVE data feed, tracking scheduled maintenance, predicting potential repairs, and an option to schedule repairs through RepairPal. Users can also view vehicle maintenance and recall information even without an OBD2 tool.