Best X431 Apps

29+ iOS apps curated and reviewed

3.0 avg rating

20 free apps

Updated September 2026

Whether you're new to x431 or looking for an upgrade, our curated collection of 29+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top X431 Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	inLaunch	Free	—	No	No	Jun 2026
2	EasyDiag4	Free	2.9★ (19)	No	No	Aug 2026
3	Launch AIOBD	Free	2.3★ (3)	No	Yes	Sep 2026
4	Auto Diag-PRO diagnosis	Free	1.8★ (35)	No	No	May 2026
5	ThinkDiag+	Free	4.5★ (4.3K)	No	No	Sep 2026
6	X100T	Free	4.2★ (11)	No	No	May 2026
7	EZdiag	Free	1.6★ (40)	No	No	May 2026
8	AIT LAUNCH	Free	1.0★ (2)	No	No	May 2026

Top Picks for X431

#1

inLaunch by Launch Tech Co., Ltd

Editor's Choice

0.0(0 ratings)

Free

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#2

EasyDiag4 by Launch Tech Co., Ltd

Strong Contender

2.9(19 ratings)

Free

EasyDiag4 screenshot 1

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This application connects to your vehicle via Bluetooth to perform comprehensive fault diagnosis across various systems. It supports reading and clearing diagnostic trouble codes, viewing data streams, and resetting service lamps, catering to the needs of the vehicle maintenance market.

#3

Launch AIOBD by Launch Tech Co., Ltd

Worth Considering

2.3(3 ratings)

FreeIn-App Purchases

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This tool diagnoses vehicle faults using a mobile device and a Bluetooth connector. It performs full system diagnostics, reads and clears trouble codes, and analyzes data streams for various car models.

More X431 apps to explore

Auto Diag-PRO diagnosis

Auto Diag-PRO diagnosis

Auto Diag-PRO diagnosis

by Launch Tech Co., Ltd

This vehicle diagnostic tool software connects to your car via a special connector and Bluetooth to perform fault diagnosis. It allows you to read and clear diagnostic trouble codes and view data streams, with advanced functions available depending on the product configuration.

Vehicle fault diagnosisRead and clear DTCsRead data stream

by THINKCAR INC

This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.

OE-level diagnostic functionsFull OBD II diagnosisSpecial maintenance functions

free with in-app purchases

by Shenzhen Yunjia Intelligence Technology Co., Ltd.

This mobile application connects to a specialized dongle to program car keys and remotes via the OBD2 port. It offers a user-friendly interface and supports a wide range of Toyota models and immobilizer systems.

Key and remote programmingOBD2 socket connectivityUser-friendly interface

by Launch Tech Co., Ltd

This diagnostic tool connects to your smartphone to perform full-system vehicle diagnostics. It offers bi-directional capabilities for quick and easy troubleshooting, with optional manufacturer-specific software available for purchase.

Smartphone-based OBDII diagnosticsFull-system diagnosticsBi-directional capabilities

free with in-app purchases

by Launch Tech Co., Ltd

This app provides a smart solution for automotive inspections, allowing users to perform full vehicle system checks without manual interaction. View detailed inspection reports on your mobile device after plugging the terminal into your car's data link connector.

Full vehicle system inspectionProfessional inspection reportsRemote diagnosis capability

by Launch Tech Co., Ltd

Car Scanner ELM OBD2

Car Scanner ELM OBD2

Car Scanner ELM OBD2

The best OBD2 diagnostic tool!

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.

Real-time sensor dataOBD fault code reading and resettingCustomizable dashboard with gauges

free with in-app purchases

by Launch Tech Co., Ltd

OBD2 Car Scanner - EOBD Facile

OBD2 Car Scanner - EOBD Facile

OBD2 Car Scanner - EOBD Facile

Torque & ELM327 OBD Diagnostic

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.

Read and clear engine fault codesMonitor real-time sensor dataTurn off check engine light

free with in-app purchases

by Launch Tech Co., Ltd

This app connects to your car via Bluetooth to diagnose Asian vehicle models. It provides diagnostic data, messaging, and access to a car cloud platform for remote troubleshooting and maintenance information sharing.

Vehicle diagnosis via BluetoothObtains vehicle information and dataMessaging functionality

by Launch Tech Co., Ltd

This diagnostic tool helps technicians and consumers assess vehicle battery health, starting systems, and charging systems. It offers safety features like anti-heat and spark prevention for electrical system diagnosis. Supports various battery types and international standards.

Battery Health TestStart System TestCharging System Test

by Launch Tech Co., Ltd

This diagnostic tool connects to your car via Bluetooth to retrieve vehicle information and data for diagnosis. It offers functions for diagnosis, information management, and a cloud platform for remote diagnostics and maintenance case queries.

Bluetooth connectivityVehicle information retrievalCar diagnosis

This module enables remote control of X10 home automation devices via your home's WiFi network. Manage your X10 devices from any location with internet access, offering convenience and enhanced control.

WiFi connectivityX10 device controlRemote access

by Launch Tech Co., Ltd

This app connects car owners, technicians, and maintenance businesses. It offers features like remote diagnostics, professional inspections, and a community forum to enhance car maintenance and ownership.

Real-time remote diagnosisProfessional car inspectionsCar owner community forum

OBD2 Scanner | OBD Auto Doctor

OBD2 Scanner | OBD Auto Doctor

OBD2 Scanner | OBD Auto Doctor

Car Diagnostics & Check Engine

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

Read and clear OBD2 diagnostic trouble codes (DTC)Reset Check Engine LightMonitor real-time vehicle data and sensor readings

free with in-app purchases

Tra Cứu XS - 3 Miền & Loto

Tra Cứu XS - 3 Miền & Loto

Tra Cứu XS - 3 Miền & Loto

XSMB, XSMN, XSMT & Loto

by Brian Cross, XRF Consulting, LLC

This application displays EDXRF spectra, allowing users to manually identify elements, calculate ROIs, and add annotations. It supports saving, loading, and printing spectra with detailed information. The app can also acquire spectra using a digital pulse processor via USB, Serial, or wireless connections.

Manual element identificationROI calculation for peaksSpectrum annotations

free with in-app purchases

FAQ about X431

Are there free x431 apps for iPhone?

Yes — 20 of the top x431 apps we rank are free to download, including inLaunch and EasyDiag4.

Does inLaunch have ads or in-app purchases?

inLaunch has no ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many x431 apps are on the App Store?

We track 29+ x431 apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

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