Comparison

ThinkDiag+ vs MAXOBD

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

MAXOBD

This utility app allows car owners to detect vehicle faults by connecting to standard OBD protocol devices. It enables users to read trouble codes, view real-time data, and access performance parameters, with enhanced features when using specific hardware. The goal is to simplify vehicle management and early problem detection.

Highlights
  • Vehicle fault detection
  • Connects with standard OBD devices
  • Read trouble codes
  • View real-time data
  • Access performance parameters
  • Clear trouble codes (with specific hardware)
Features
Read full description

This MAXOBD app is designed for all car owners, providing convenient vehicle fault detection services. It supports connection with standard OBD protocol devices, allowing users to perform common OBD scans and quickly check the health of their vehicles. By connecting to the OBD device, users can easily read the vehicle’s trouble codes, view real-time data, and access various performance parameters. In particular, if users connect a Konnwei device, they can enjoy more advanced features, including scanning more fault information and clearing trouble codes. This helps car owners not only identify potential vehicle issues but also clear trouble codes and restore the vehicle to normal operation. The goal of this app is to make it easier for every car owner to manage their vehicle, detect problems early, avoid costly repairs, and ensure the vehicle is always in the best running condition. Whether for regular health checks or quick diagnostics when a fault occurs, this app will be a reliable assistant for your car care

Screenshots

ThinkDiag+4 screens
MAXOBD4 screens

Verdict

The call

The clearest difference is review sentiment: ThinkDiag+ at 74% against MAXOBD's 29%. ThinkDiag+ also leads on rating (4.5 vs 2.4) and ratings volume (4.3K vs 7). MAXOBD's advantage is monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ThinkDiag+ holds the better App Store score, 4.5 against 2.4. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.3K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 74% of ThinkDiag+'s written reviews are positive against 29% of MAXOBD's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
ThinkDiag+ versus MAXOBD: the parameters behind the verdict, then further details
ParameterThinkDiag+MAXOBD
PriceFreeFree
Rating4.5 (4.3K ratings) — better2.4 (7 ratings)
Positive reviews73.9% of reviews — better28.6% of reviews
Number of ratings4.3K — better7
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size539 MB47 MB
Age rating17+17+
DeveloperTHINKCAR INC祖策 谢

Customer experience

ThinkDiag+

All ratings4,308 ratings
Positive88.1%
Neutral2.7%
Negative9.2%
Written reviews276 reviews
Positive73.9%
Neutral2.5%
Negative23.6%

MAXOBD

All ratings7 ratings
Positive28.6%
Neutral14.3%
Negative57.1%
Written reviews7 reviews
Positive28.6%
Neutral14.3%
Negative57.1%

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

MAXOBD

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

ThinkDiag+

No in-app purchases

None

MAXOBD

No in-app purchases

Questions

Is ThinkDiag+ free?
ThinkDiag+ is free to download, with no in-app purchases.
Is MAXOBD free?
MAXOBD is free to download, with no in-app purchases.
Which has better reviews, ThinkDiag+ or MAXOBD?
ThinkDiag+ is rated higher. ThinkDiag+ averages 4.5 out of 5 from 4.3K ratings, while MAXOBD averages 2.4 from 7 ratings.
Do ThinkDiag+ or MAXOBD have ads?
Neither ThinkDiag+ nor MAXOBD shows ads.
Which is updated more often, ThinkDiag+ or MAXOBD?
ThinkDiag+ ships an update every 3 weeks, and MAXOBD every 3 weeks. Most recently, ThinkDiag+ was updated on October 12, 2026 and MAXOBD on September 30, 2026.

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