Comparison

AIT LAUNCH vs Diag

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

Head to head
About

AIT LAUNCH

This app provides a smart solution for automotive inspections, allowing users to perform full vehicle system checks without manual interaction. View detailed inspection reports on your mobile device after plugging the terminal into your car's data link connector.

Highlights
  • Full vehicle system inspection
  • Professional inspection reports
  • Remote diagnosis capability
  • Value-added service for businesses
  • Push notifications for car owners
  • Share inspection reports
Features
Read full description

Introduction: X-431 AIT(Automotive Full-system Artificial Inspection Terminal) is an evolutionary smart plug & play solution for specialized automotive inspection. User achieves complete full vehicle system inspection without any manual work and interface interaction only by plugging the AIT into the vehicle's DLC(Data Link Connector) directly or via extension cable and then switching the ignition key on. After inspection is complete, user can log in the AIT app to view the inspection report via mobile terminal. Features: [AIT Terminal] Developed based on Launch’s 20 years of automotive diagnostic technology, the AIT terminal covers a wide range of vehicle models and can perform complete inspection for vehicle Power, Safety & Security, Chassis, Body, Entertainment and other vehicle systems. In general it always takes 5min-20min to complete a vehicle inspection. [Professional inspection report] A complete professional inspection report allows you to easily identify the working status of the vehicle status. [Remote diagnosis] After the report is generated, the AIT business may negotiate with the car owner whether a professional service technician is required to help diagnose the vehicle remotely. [AIT Business] After binding the AIT connectors, The AIT business can offer inspection report as a value-added service to car owner [Car Owner] After the car owner added the vehicle information(such as registration number and VIN), he/she will receive the push messages once a AIT report is successfully generated. [Share] User can share the AIT inspection report with friends and family members via Facebook, Twitter or E-mail.

About

Diag

This diagnostic software package works with the MaxiAP200 to provide diagnostic functions for China vehicles. It offers a comprehensive suite of tools for vehicle maintenance and troubleshooting.

Highlights
  • Vehicle diagnostics
  • China vehicle support
  • Requires MaxiAP200
  • Maintenance tools
  • Troubleshooting functions
Features
Read full description

Diagnostic software package for China vehicles, which requires to work with the main program MaxiAP200 together.

Screenshots

AIT LAUNCH4 screens
Diag4 screens

Verdict

The call

The clearest difference is rating: Diag at 5.0 against AIT LAUNCH's 1.0. Diag also leads on review sentiment (33% vs 0%) and update cadence (every 2 months vs every 4 months). AIT LAUNCH's advantage is iOS requirement (8.0 vs 13.0). On price, ratings volume, 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

Diag holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 0% of AIT LAUNCH's written reviews are positive against 33% of Diag's.

UpkeepUpdate frequency

AIT LAUNCH ships an update every 4 months, Diag every 2 months. The most recent releases landed on November 12, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
AIT LAUNCH versus Diag: the parameters behind the verdict, then further details
ParameterAIT LAUNCHDiag
PriceFreeFree
Rating1.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings23 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size20 MB249 MB
Age rating4+4+
DeveloperLaunch Tech Co., LtdAutel Intelligent Technology Co., Ltd.

Customer experience

AIT LAUNCH

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Diag

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

AIT LAUNCH

No in-app purchases

None

Diag

No in-app purchases

Questions

Is AIT LAUNCH free?
AIT LAUNCH is free to download, with no in-app purchases.
Is Diag free?
Diag is free to download, with no in-app purchases.
Which has better reviews, AIT LAUNCH or Diag?
Diag is rated higher. AIT LAUNCH averages 1.0 out of 5 from 2 ratings, while Diag averages 5.0 from 3 ratings.
Do AIT LAUNCH or Diag have ads?
Neither AIT LAUNCH nor Diag shows ads.
Which is updated more often, AIT LAUNCH or Diag?
AIT LAUNCH ships an update every 4 months, and Diag every 2 months. Most recently, AIT LAUNCH was updated on November 12, 2026 and Diag on November 4, 2026.

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