AIT LAUNCH vs Diag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Full vehicle system inspection
- Professional inspection reports
- Remote diagnosis capability
- Value-added service for businesses
- Push notifications for car owners
- Share inspection reports
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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.
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.
- Vehicle diagnostics
- China vehicle support
- Requires MaxiAP200
- Maintenance tools
- Troubleshooting functions
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Diagnostic software package for China vehicles, which requires to work with the main program MaxiAP200 together.
Screenshots
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | AIT LAUNCH | Diag |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 20 MB | 249 MB |
| Age rating | 4+ | 4+ |
| Developer | Launch Tech Co., Ltd | Autel Intelligent Technology Co., Ltd. |
Customer experience
AIT LAUNCH
Diag
In-app purchases
AIT LAUNCH
No in-app purchases
Diag
No in-app purchases








