Comparison

AIT LAUNCH vs KDIAG

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

KDIAG

This app offers comprehensive automotive fault detection and OBD functions for various car brands. It provides professional diagnostic services to quickly identify and resolve car issues, making driving safer and smoother for enthusiasts and professionals alike. The app supports 8 languages and is free to use.

Highlights
  • Comprehensive automotive fault detection
  • OBD functions
  • System fault diagnosis for mainstream brands
  • Free to use
  • Supports 8 languages
  • Professional diagnostic services
Features
Read full description

The "KDIAG" automotive diagnostic app will provide you with the most comprehensive automotive fault detection and OBD functions, supporting system fault diagnosis for various mainstream brand cars and providing free use. Whether you are a car enthusiast or a professional technician, you can easily use it. The app also supports 8 languages to meet the needs of users worldwide. The app provides professional automotive diagnostic services that can quickly identify and solve automotive faults. Whether you are at home or on the road, you can easily use our application to ensure that your car remains in optimal condition. Download and experience our car diagnostic app to make your driving safer and smoother! "KDIAG"汽车诊断APP将为您提供最全面的汽车故障检测和OBD功能,支持多种主流品牌汽车的系统故障诊断并免费提供使用,无论您是一位汽车爱好者或专业技师,都能轻松使用。App还支持8种语言,满足全球使用者的使用需求。App提供专业级的汽车诊断服务,能够快速识别和解决汽车故障。无论您是在家里还是在路上,都可以轻松使用我们的应用程式来确保您的汽车保持最佳状态。快来下载并体验我们的汽车诊断APP,让您的驾驶更加安全和顺畅!

Screenshots

AIT LAUNCH4 screens
KDIAG4 screens

Verdict

The call

The clearest difference is rating: KDIAG at 3.3 against AIT LAUNCH's 1.0. KDIAG also leads on review sentiment (31% vs 0%) and update cadence (fortnightly vs every 4 months). AIT LAUNCH's advantage is iOS requirement (8.0 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

KDIAG holds the better App Store score, 3.3 against 1.0. That said, the two scores are not equally well evidenced: KDIAG has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of AIT LAUNCH's written reviews are positive against 31% of KDIAG's.

UpkeepUpdate frequency

AIT LAUNCH ships an update every 4 months, KDIAG fortnightly. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
AIT LAUNCH versus KDIAG: the parameters behind the verdict, then further details
ParameterAIT LAUNCHKDIAG
PriceFreeFree
Rating1.0 (2 ratings)3.3 (20 ratings) — better
Positive reviews0.0% of reviews30.8% of reviews — better
Number of ratings220 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size20 MB74 MB
Age rating4+4+
DeveloperLaunch Tech Co., Ltd祖策 谢

Customer experience

AIT LAUNCH

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

KDIAG

All ratings20 ratings
Positive55.0%
Neutral10.0%
Negative35.0%
Written reviews13 reviews
Positive30.8%
Neutral23.1%
Negative46.2%

In-app purchases

None

AIT LAUNCH

No in-app purchases

None

KDIAG

No in-app purchases

Questions

Is AIT LAUNCH free?
AIT LAUNCH is free to download, with no in-app purchases.
Is KDIAG free?
KDIAG is free to download, with no in-app purchases.
Which has better reviews, AIT LAUNCH or KDIAG?
KDIAG is rated higher. AIT LAUNCH averages 1.0 out of 5 from 2 ratings, while KDIAG averages 3.3 from 20 ratings.
Do AIT LAUNCH or KDIAG have ads?
Neither AIT LAUNCH nor KDIAG shows ads.
Which is updated more often, AIT LAUNCH or KDIAG?
AIT LAUNCH ships an update every 4 months, and KDIAG fortnightly. Most recently, AIT LAUNCH was updated on October 16, 2026 and KDIAG on October 8, 2026.

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