Comparison

ThinkDiag+ vs OBD2 Scanner

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ThinkDiag+

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.

Highlights
  • 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
Features
Read full description

1. Profession functions refer to OE level functions, such as read/clear code, data flow diagram, read ECU, drive test, bidirectional special functions, etc. 2. Support full-function OBD II diagnosis, read data flow, freeze frame read IM/real-time data, read/clear fault code, vehicle on-board monitoring/computer system control operation and read vehicle information. 3. Support vehicle maintenance light return to normal. 4. Select any vehicle diagnostic software, covering up to 39 major automobile manufacturers. 5. Support automatic VIN reading and one-key diagnosis. 6. Clear interpretation of fault codes and generate professional diagnostic reports. 7. Be able to communicate with other users within the ThinkDiag community (share/help/support). Not only for "ThinkDiag" and "ThinkDiag 2" device, but also works for "ThinkDiag Mini", "ThinkDirver", and "Thinkcar Pro" devices. ThinkDiag, an innovative vehicle diagnostic tool, is specially designed for repair technicians, small and medium-sized repair shops, and DIYers, to achieve the original manufacturer level diagnostic performance. It supports more than 100 vehicle brands of diagnostic services, including 15 special maintenance reset functions. ThinkDiag is as good as those comprehensive diagnostic equipment costed thousands of dollars. ThinkDiag is also an intelligent diagnostic device. Connecting with smartphone via Bluetooth, it is controlled to work by app. In the app, there is a diagnostic software store, and users can subscribe for diagnostic software according to their needs. ***Contact Us W: www.mythinkcar.com E: service@mythinkcar.com P: +1 833-692-2766 2151 S Haven Ave Unit 203 Ontario CA 91761 USA

About

OBD2 Scanner

Transform your smartphone into a powerful car diagnostic tool. Monitor real-time engine data, read and clear trouble codes, and track your vehicle's performance. Customize your dashboard and access repair manuals to understand and fix issues.

Highlights
  • Real-time engine data monitoring
  • Read and clear trouble codes
  • Performance tracking
  • Customizable dashboards
  • Repair manual database
  • Compatibility with OBD2 ELM327 adapters
Features
Read full description

Turn your phone into a car scanner : Diagnose & monitor with OBD2 Torque - Car Scanner ELM 327 ! Unlock your car's full potential: - OBD2 Diagnostics: Read & clear trouble codes, view real-time engine & sensor data. - Car Maintenance: Track service history, oil changes, and maintenance schedules. - Smart Driving Tools: HUD mode on windshield, Parking Finder, and Quick Navigation. - Performance Tracking: Monitor fuel efficiency, acceleration, and live gauges. - Custom Dashboards: Build personalized views with the info you need most. - Universal Compatibility: Supports standard OBD2 ELM327 Bluetooth/Wi-Fi scanners. Using tips: - The app requires a Wi-Fi or or Bluetooth 4.0 (Bluetooth LE) OBD2 ELM327 compatible adapter (device) to work. ELM327 devices plug into the diagnostics socket in the car and give your phone access to car diagnostics. - If you buy one of the cheap OBD2 ELM327 adapters , then make sure it’s not marked as v.2.1. These adapters are supported, but they have lots of bugs. - Vehicle ECUs vary in the amount of sensors supported. This app can’t show you something that is not provided by your car. Notice - This app are free-to-install, but has some premium features that need purchase/subscribe to use. Non-subscribed users can use each Premium feature for a limited number of times per day. - Subscriptions automatically renew unless cancelled 24 hours before the end of the period. - Manage your subscription and turn off auto-renewal in your account settings. - Any unused portion of a free trial will be forfeited if you subscribe. Term of use: https://appforlife.moniqtap.com/index.php/term-of-use/ Privacy Policy: https://appforlife.moniqtap.com/index.php/privacy-policy/

Screenshots

ThinkDiag+4 screens
OBD2 Scanner4 screens

Verdict

The call

ThinkDiag+ and OBD2 Scanner both sit at 4.5 stars, but that hides the real split: 74% of ThinkDiag+'s written reviews are positive against 23% of OBD2 Scanner's. ThinkDiag+ also leads on in-app purchases (none vs 6) and ads (none vs shown). On price, rating, update cadence and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBD2 Scanner sells 6 in-app purchases, starting at $6.99 per 7 days. ThinkDiag+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for ThinkDiag+ against 4.6 for OBD2 Scanner. Both are backed by a comparable volume of ratings — 4.4K and 1.1K respectively. Written reviews are what separate them: 74% of ThinkDiag+'s written reviews are positive against 23% of OBD2 Scanner's.

UpkeepUpdate frequency

ThinkDiag+ ships an update every 3 weeks, OBD2 Scanner monthly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
ThinkDiag+ versus OBD2 Scanner: the parameters behind the verdict, then further details
ParameterThinkDiag+OBD2 Scanner
PriceFreeFree
Rating4.5 (4.4K ratings)4.6 (1.1K ratings) — better
Positive reviews74.1% of reviews — better22.5% of reviews
Number of ratings4.4K — better1.1K
Update frequencyEvery 3 weeks — betterMonthly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size539 MB102 MB
Age rating17+4+
DeveloperTHINKCAR INCPhong Pham

Customer experience

ThinkDiag+

All ratings4,308 ratings
Positive88.1%
Neutral2.7%
Negative9.2%
Written reviews278 reviews
Positive74.1%
Neutral2.5%
Negative23.4%

OBD2 Scanner

All ratings974 ratings
Positive88.6%
Neutral4.0%
Negative7.4%
Written reviews71 reviews
Positive22.5%
Neutral2.8%
Negative74.6%

User reviews

ThinkDiag+

From 4.4K App Store ratings

What we love

  • 🚀 Easy to use
  • 🚀 Powerful diagnostic capabilities
  • 🚀 Affordable price
  • 🚀 Helpful customer support
  • 🚀 Versatile for DIY and professionals

Room to improve

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

OBD2 Scanner

From 1.1K App Store ratings

What we love

  • 👍 Simple and easy to use setup
  • ✅ Works well for some vehicle models
  • ⭐ Useful for basic OBD2 scanning

Room to improve

  • 💰 Expensive pricing for limited functionality
  • 🐛 Bluetooth connection drops frequently
  • ❌ Poor compatibility with many vehicle models
  • 📱 Deceptive UI with hidden exit menus
  • 🔒 Security concerns and unauthorized charges

Bugs and requests

ThinkDiag+

Reported bugs

3 issues
  • Failure to recognize VIN or vehicle information
  • Inability to clear certain error codes
  • Inconsistent performance across different devices

Requested features

4 requests
  • Improved user interface and navigation
  • More detailed troubleshooting guides
  • Expanded vehicle coverage and special functions
  • Offline mode for diagnostics

OBD2 Scanner

Reported bugs

8 issues
  • Bluetooth connection drops and requires reboot
  • App fails to connect to OBD2 devices
  • Sensors display N/A values in paid version
  • Cannot select vehicle profile
  • App crashes or becomes unresponsive
Show 3 more
  • Fault code reading not functioning
  • Unauthorized subscription charges after trial
  • Device not recognized by application

Requested features

6 requests
  • Oil temperature and transmission data
  • Wheel sensor information
  • Pending DTC display
  • Permanent check engine light clearing
  • Module-specific scanning selection
Show 1 more
  • Better privacy controls and data protection

In-app purchases

None

ThinkDiag+

No in-app purchases

6 purchases

OBD2 Scanner

Subscriptions5
  • Premium weeky freetrial3 Days trial$6.997 Days
  • Premium Weekly3 Days trial$7.997 Days
  • Premium Monthly$14.991 Month
Show 2 more
  • Premium Monthly$17.991 Month
  • Premium Yearly$59.991 Year
One-time1
  • Lifetime Premium$69.99

Questions

Is ThinkDiag+ free?
ThinkDiag+ is free to download, with no in-app purchases.
Is OBD2 Scanner free?
OBD2 Scanner is free to download, with in-app purchases available.
Which has better reviews, ThinkDiag+ or OBD2 Scanner?
OBD2 Scanner is rated higher. ThinkDiag+ averages 4.5 out of 5 from 4.4K ratings, while OBD2 Scanner averages 4.6 from 1.1K ratings.
Do ThinkDiag+ or OBD2 Scanner have ads?
OBD2 Scanner shows ads; ThinkDiag+ does not.
Which is updated more often, ThinkDiag+ or OBD2 Scanner?
ThinkDiag+ ships an update every 3 weeks, and OBD2 Scanner monthly. Most recently, ThinkDiag+ was updated on October 26, 2026 and OBD2 Scanner on October 25, 2026.

Other comparisons