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Best apps like iSmartDiag

13+ similar apps compared and reviewed

4.2 avg rating
9 free apps
Updated September 2026
iSmartDiag
iSmartDiag
Shenzhen Vident Technology Co., Ltd
🔧 Utilities

iSmartDiag is great, but it's not the only option. Explore 13+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to iSmartDiag

Car Scanner ELM OBD2#1

Car Scanner ELM OBD2 by Stanislav Svistunov

The best OBD2 diagnostic tool!
Editor's Choice
🔧 Utilities
4.8😊(32K 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
Automend Pro OBD 2 Car Scanner#2

Automend Pro OBD 2 Car Scanner by Think Tech Sales Limited

OBDII Car Scanner & Diagnostic
Strong Contender
🔧 Utilities
3.2(31 ratings)
FreeIn-App Purchases
Automend Pro OBD 2 Car Scanner screenshot 1
Automend Pro OBD 2 Car Scanner screenshot 2
Automend Pro OBD 2 Car Scanner screenshot 3
Automend Pro OBD 2 Car Scanner screenshot 4
Automend Pro OBD 2 Car Scanner screenshot 5

This app acts as a car diagnostic tool, providing real-time information about your vehicle's health. It helps you understand mechanical issues, differentiate necessary repairs from unnecessary ones, and track your car's maintenance history. It translates complex diagnostic trouble codes into easy-to-understand language.

Engine Link - OBD II diagnosis#3

Engine Link - OBD II diagnosis by K SOLUTION LLC

Vehicle monitoring & diagnosis
Worth Considering
🔧 Utilities
2.9😐(62 ratings)
$5.99
Engine Link - OBD II diagnosis screenshot 1
Engine Link - OBD II diagnosis screenshot 2
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Transform your iPhone into a powerful vehicle diagnostics tool. Monitor real-time performance, read and clear fault codes, and customize your dashboard with detailed sensor data. Supports emission testing and offers a HUD mode for night driving.

What We Love

  • 🚀 Works as expected
  • 👍 Flexible and customizable
  • 💡 Supports custom PIDs
  • 🚀 Reliable connection
  • 👍 Good customer support

Room to Improve

  • 🐛 Doesn't work with all OBD dongles
  • 🐛 Compatibility issues with newer iOS versions
  • 👎 Outdated and clunky interface
  • 👎 Limited functionality for EVs
  • 🐛 Connectivity problems

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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.

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ThinkDiag+
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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.

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Access professional-level diagnostics, maintenance resets, and hidden feature activations for German car brands. Understand, customize, and enhance your driving experience with OE-level fault diagnosis and one-click modifications.

OE-level full system diagnosticsBi-directional control and active testsCoding and adaptation functions
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DFlasher
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This app offers specialized mobile tools for tuning, diagnostics, and chip tuning of BMW M57 diesel engines. It provides professional-grade ECU flashing, fault code reading, and real-time engine data for performance optimization and maintenance.

M57 ECU tuning and flashingRead and clear DTCsReal-time ECU information
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GWSMARTBT
GWSMARTBT
GWSMARTBT
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This diagnostic tool offers advanced vehicle system scanning and bidirectional control for automotive technicians. It provides 23 professional reset functions and live data mapping, eliminating the need for expensive alternatives. Enjoy comprehensive coverage, a 2-year warranty, and free lifetime software updates.

Full system diagnosticsBidirectional programming23 pro reset functions
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FROMM Keep it Smart - S-Tools
FROMM Keep it Smart - S-Tools
FROMM Keep it Smart - S-Tools
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OBD2 Scanner | OBD Auto Doctor
OBD2 Scanner | OBD Auto Doctor
OBD2 Scanner | OBD Auto Doctor
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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
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