Comparison

OBD JScan vs ThinkDiag+

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

Head to head
About

OBD JScan

This app provides advanced diagnostics for Jeep, Chrysler, and Dodge vehicles. It allows users to read and clear trouble codes, view live sensor data, and access settings across all vehicle modules, including ABS and transmission.

Highlights
  • Read/Clear Diagnostic Trouble Codes
  • Access Live Data from all sensors
  • View vehicle settings
  • Access all vehicle modules (ABS, Transmission, etc.)
  • Identify module, VIN, Part Number, and Version
  • Share vehicle trouble codes
Features
Read full description

What is OBD JScan? OBD JScan is powerful Jeep & Chrysler & Dodge diagnostic application. JScan allows reading standard Diagnostic Trouble Codes (emission related), general Live Data and Adaptations and much more. Thats not all. JScan can access all modules avalable on your vehicle. ABS, Steering Column, Automatic Transimmsion, Radio, Sway Bar, Havac and many more. Some supported cars: Jeep Wrangler JK, Jeep Wrangler JL - additional hardware required to bypass security gateway* Jeep Wrangler JT - additional hardware required to bypass security gateway* Jeep Wrangler 4XE - additional hardware required to bypass security gateway* Jeep Grand Cherokee WK Jeep Grand Cherokee, WK2 11-13 Jeep Grand Cherokee WK2 14-21 - 18+ - additional hardware required to bypass security gateway* Jeep Commander XK Jeep Liberty/Cherokee KK, Jeep Compass, Jeep Patriot MK Dodge Avenger Dodge Grand Caravan RT, Dodge Journey, Dodge Caliber Dodge Durango 2004-2009 Dodge Durango 2011-2013 Dodge Durango 2014-2023* Dodge Ram Dodge Nitro Dodge Magnum Dodge Challenger - 08-14 Dodge Challenger - 14+ Dodge Charger- 06-10 Dodge Charger- 11+ Dodge Avenger Chrysler Town&Country RT Chrysler 200 Chrysler 300C Chrysler 300 Chrysler Sebring Chrysler Aspen and more.. * WK2 2018+ = requires securit bypass cable * Dodge Durango 2018+ = requires securit bypass cable * Dodge Ram 2018+ = requires securit bypass cable * JL requires security bypass cable * JT requires security bypass cable * http://jscan.net/jl-jt-security-bypass/ What can I Do with JScan? JScan allows you to access, diagnostic trouble codes and Live Data in all modules. You can easily Read, Clear, Share vehicle Trouble Codes. View Live Data from all sensors in vehicle. View vehicle settings. Identify module, Vin, Part Number, Version and more. Recommended device: - OBD ELM 327 compatible device is required to make app work as expected. Recommended adapters: - iCar Pro 4.0 Bluetooth LE (Bluetooth) - Vlinker MC+ (Bluetooth) - for newer cars - OBD Link MX+ Bluetooth (Bluetooth) More info about supported and recommended OBD adapters: http://jscan.net/supported-and-not-supported-obd-adapters/ Facebook: https://www.facebook.com/obdjscan/ Website: http://jscan.net/

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

Screenshots

OBD JScan4 screens
ThinkDiag+4 screens

Verdict

The call

The clearest difference is in-app purchases: ThinkDiag+ at none against OBD JScan's 8. ThinkDiag+ also leads on ratings volume (4.3K vs 1.3K). OBD JScan's advantage is rating (4.7 vs 4.5). On price, review sentiment, update cadence and ads 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. OBD JScan sells 7 one-off in-app purchases. ThinkDiag+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBD JScan holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 1.3K and 4.3K respectively. Written reviews point the same way: 80% of OBD JScan's written reviews are positive against 74% of ThinkDiag+'s.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 16, 2026.

Scorecard3 real differences · 7 level
OBD JScan versus ThinkDiag+: the parameters behind the verdict, then further details
ParameterOBD JScanThinkDiag+
PriceFreeFree
Rating4.7 (1.3K ratings) — better4.5 (4.3K ratings)
Positive reviews79.6% of reviews — better74.1% of reviews
Number of ratings1.3K4.3K — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size403 MB539 MB
Age rating12+17+
DeveloperPiotr BialicTHINKCAR INC

Customer experience

OBD JScan

All ratings1,296 ratings
Positive93.4%
Neutral1.9%
Negative4.6%
Written reviews240 reviews
Positive79.6%
Neutral5.0%
Negative15.4%

ThinkDiag+

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

User reviews

OBD JScan

From 1.3K App Store ratings

What we love

  • 🚀 Easy to use
  • 🔧 Powerful customization options
  • 👍 Excellent customer support
  • 💡 Useful diagnostic and monitoring features
  • 🔓 Enables features otherwise locked by dealer

Room to improve

  • 🐛 Occasional connectivity issues
  • 🔌 Requires additional hardware purchase
  • ⚠️ Compatibility issues with newer vehicle models
  • 🕰️ Slow performance in certain scenarios

ThinkDiag+

From 4.3K 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

Bugs and requests

OBD JScan

Reported bugs

2 issues
  • Inability to save/export diagnostic data
  • Inconsistent behavior when changing vehicle settings

Requested features

4 requests
  • Expanded vehicle compatibility
  • Improved stability and reliability
  • Enhanced user interface and guidance
  • Integration with other vehicle apps/services

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

In-app purchases

7 purchases

OBD JScan

One-time7
  • + 1 garage license2 variants$9.99
  • 1 VIN license$20.99
  • Add 1 VIN$20.99
Show 4 more
  • Add 1 VIN Vehicle Slot$20.99
  • 3 VIN licenses$54.99
  • 5 VIN Licenses$84.99
  • 10 VIN Licenses$149.99
None

ThinkDiag+

No in-app purchases

Questions

Is OBD JScan free?
OBD JScan is free to download, with in-app purchases available.
Is ThinkDiag+ free?
ThinkDiag+ is free to download, with no in-app purchases.
Which has better reviews, OBD JScan or ThinkDiag+?
OBD JScan is rated higher. OBD JScan averages 4.7 out of 5 from 1.3K ratings, while ThinkDiag+ averages 4.5 from 4.3K ratings.
Do OBD JScan or ThinkDiag+ have ads?
Neither OBD JScan nor ThinkDiag+ shows ads.
Which is updated more often, OBD JScan or ThinkDiag+?
OBD JScan ships an update every 3 weeks, and ThinkDiag+ every 3 weeks. Most recently, OBD JScan was updated on October 16, 2026 and ThinkDiag+ on October 16, 2026.

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