Comparison

ThinkDiag+ vs Auto101 Pro

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

Auto101 Pro

This professional diagnostic tool provides in-depth analysis and control for GM, Ford, and Chrysler vehicles. It allows reading and clearing diagnostic trouble codes, performing relearn procedures, and managing vehicle security systems.

Highlights
  • Read/Clear DTCs
  • Perform relearn procedures
  • Manage vehicle security
  • Read VIN and calibration data
  • Support for GM, Ford, Chrysler
Features
Read full description

Auto101 Pro is a professional diagnostic tool designed for GM vehicles (1996+), with support for Ford and Chrysler vehicles. FEATURES: GM Tool: • Get Info: Read VIN, SDM part number, and backup data from BCM • Setup SDM: Write SDM part number to clear B1001 code • Read/Clear DTCs: Diagnostic trouble codes for ECM/PCM, BCM, and SDM • Crank Relearn: Perform crankshaft position relearn to clear P0315 • BPPS Relearn: Brake Pedal Position Sensor relearn procedure • IMMO Relearn: Immobilizer relearn to synchronize keys • VATS Relink: Vehicle Anti-Theft System relearn Ford Tool: • Get Info: VIN, Calibration ID, part numbers • Stored Keys: Keys programmed count (PATS 1996–2010) • Link PATS: Sync PCM and Cluster security (module replacement) • Clear Keys: Erase all keys; 2 new keys required to restart • Read/Clear DTCs: Standard OBD and Ford-specific codes Chrysler Tool: • Get Info: VIN and Calibration ID • Read/Clear DTCs: Standard OBD and PCM/TIPM codes • ETC Reset: Electronic Throttle Control (follow pedal prompts) REQUIREMENTS: • Auto101 OBD2 Bluetooth adapter (Bluetooth 4.0 or higher) • WiFi adapters not currently supported • Most adapters under $15 don't work! COMPATIBLE VEHICLES: GM Global A platform (2010+). Ford and Chrysler: see in-app tool for supported models. For complete vehicle list, see in-app Help section. IMPORTANT NOTES: • For Setup SDM on GMLAN systems (2006+), you need backup data from old BCM OR an adapter that supports GMLAN (vLinker MC+, OBDLink MX+) • Some GM vehicles began using GMLAN as early as 2004 SUPPORT: Contact@auto101.net

Screenshots

ThinkDiag+4 screens
Auto101 Pro4 screens

Verdict

The call

The clearest difference is rating: Auto101 Pro at 5.0 against ThinkDiag+'s 4.5. Auto101 Pro also leads on review sentiment (100% vs 74%) and monetization model (free vs free with in-app purchases). ThinkDiag+'s advantage is ratings volume (4.3K vs 5) and iOS requirement (12.0 vs 16.0). 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

Auto101 Pro holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.3K ratings behind it against 5, 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 100% of Auto101 Pro's.

UpkeepUpdate frequency

ThinkDiag+ ships an update every 3 weeks, Auto101 Pro every 2 weeks. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
ThinkDiag+ versus Auto101 Pro: the parameters behind the verdict, then further details
ParameterThinkDiag+Auto101 Pro
PriceFreeFree
Rating4.5 (4.3K ratings)5.0 (5 ratings) — better
Positive reviews73.6% of reviews100.0% of reviews — better
Number of ratings4.3K — better5
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size539 MB133 MB
Age rating17+4+
DeveloperTHINKCAR INCAUTO101 LLC

Customer experience

ThinkDiag+

All ratings4,308 ratings
Positive88.1%
Neutral2.7%
Negative9.2%
Written reviews273 reviews
Positive73.6%
Neutral2.6%
Negative23.8%

Auto101 Pro

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Auto101 Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

ThinkDiag+

No in-app purchases

None

Auto101 Pro

No in-app purchases

Questions

Is ThinkDiag+ free?
ThinkDiag+ is free to download, with no in-app purchases.
Is Auto101 Pro free?
Auto101 Pro is free to download, with no in-app purchases.
Which has better reviews, ThinkDiag+ or Auto101 Pro?
Auto101 Pro is rated higher. ThinkDiag+ averages 4.5 out of 5 from 4.3K ratings, while Auto101 Pro averages 5.0 from 5 ratings.
Do ThinkDiag+ or Auto101 Pro have ads?
Neither ThinkDiag+ nor Auto101 Pro shows ads.
Which is updated more often, ThinkDiag+ or Auto101 Pro?
ThinkDiag+ ships an update every 3 weeks, and Auto101 Pro every 2 weeks. Most recently, ThinkDiag+ was updated on September 25, 2026 and Auto101 Pro on September 18, 2026.

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