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ThinkDiag+

ThinkDiag+

by THINKCAR INC

4K ratings
264 reviews
🔧 Utilities
🌐 Social Networking
Free

Details

  • Released
  • Updated
  • January 4, 2020
  • March 20, 2026

Developer

THINKCAR INC
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ThinkDiag+ screenshot #1 for iPhone
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About

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 functions
✓Full OBD II diagnosis
✓Special maintenance functions
✓Supports 100+ vehicle brands
✓Automatic VIN reading
✓Professional diagnostic reports
✓In-app user community
Show original description

What users say

Summarized from real user reviews of ThinkDiag+. Based on 4K reviews and a 4.5/5 average, it highlights the 7 positives and 4 negatives reviewers mention most about this Utilities app.

Positive things

  • 🚀Easy to use
  • 🚀Powerful diagnostic capabilities
  • 🚀Affordable price
  • 🚀Helpful customer support
  • 🚀Versatile for DIY and professionals
  • 🚀Reliable and accurate
  • 🚀Extensive vehicle coverage

Negative things

  • 🐛Occasional crashes or freezes
  • 🐛Compatibility issues with certain vehicles
  • 🔒Concerns about annual subscription fees
  • 🔒Limited functionality on iOS devices
See all reviews

What's New in ThinkDiag+

3.2.9

March 20, 2026

1. Update diagnostic software for VAZ V10.08. 2. Fixed known bugs.

User reviews

Most RecentHighest RatedLowest Rated

Broke my car

Cost my hundreds to fix
userporfavoruserporfavor

User friendly

I’ve had other scan tools in the past and this has been the best by far. I think it’s the best you can get for the price. I love the AI feature and that it gives you possible caused and solutions. I no longer have to go to google after pulling codes anymore everything is done within the app and there is also community support too. Love it!
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Oakdalebud08Oakdalebud08

Best

Best
Bmwhug753Bmwhug753

Exceptional

This thing is everything that it claims to be and more
Average Joe2470Average Joe2470

Best ever

I’ve been using ThinkDiag for vehicle diagnostics and have been impressed with its features and ease of use. The app connects quickly, provides clear fault-code information, and offers useful live data that helps with troubleshooting. The interface is user-friendly, even for someone who isn’t a professional mechanic. It’s a convenient and cost-effective tool for monitoring vehicle health and diagnosing issues before they become major problems. Overall, it’s been a valuable addition to my automotive toolkit.
Show more
MarvindoesallMarvindoesall
See 259 more reviews

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User experience

🐞

Reported Bugs

3 issues

Failure to recognize VIN or vehicle information

Bug

Inability to clear certain error codes

Bug

Inconsistent performance across different devices

Bug
✨

Requested Features

4 requests

Improved user interface and navigation

Feature

More detailed troubleshooting guides

Feature

Expanded vehicle coverage and special functions

Feature

Offline mode for diagnostics

Feature

FAQ

What kind of diagnostic functions does this app offer?

The app provides OE-level diagnostic functions, including reading and clearing fault codes, analyzing data flow, reading ECU information, performing drive tests, and executing bidirectional special functions. It also supports full-function OBD II diagnosis and vehicle maintenance light resets.

How many car brands does the app support?

The app supports diagnostic services for over 100 major automobile manufacturers. Users can subscribe to diagnostic software for specific vehicle brands based on their needs.

What is the cost of using this app?

The app itself is free to download and use for basic functions. However, users can subscribe to diagnostic software for specific vehicle brands and functions within the app's diagnostic software store, which incurs a cost.

What devices are compatible with this app?

This app is compatible with ThinkDiag, ThinkDiag 2, ThinkDiag Mini, ThinkDriver, and Thinkcar Pro devices. It connects to your smartphone via Bluetooth to control the diagnostic hardware.

Who would benefit most from using this app?

This app is ideal for professional repair technicians, small and medium-sized repair shops, and DIY car owners who need advanced vehicle diagnostic capabilities. It offers performance comparable to expensive professional diagnostic equipment.