# EasyDiag4 > Vehicle fault diagnosis tool for maintenance market with Bluetooth connectivity. (iPhone/iPad app by Launch Tech Co., Ltd.) - Source: https://appshunter.io/ios/app/easydiag4/id1505477232 (this page in markdown: same URL + `.md`) - Developer: [Launch Tech Co., Ltd](https://appshunter.io/developer/447568418) - Category: Utilities - Price: Free - Rating: 2.89/5 from 19 App Store ratings · 7 written reviews indexed - Age rating: 17+ - Requires: iOS 11.0 · 114 MB - Languages: English, French, German, Italian, Japanese, Portuguese, Russian, Chinese, Spanish, Chinese - Released: 2020-04-17 - Data updated: 2026-08-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/easydiag4/id1505477232/reviews.md ## What is EasyDiag4? EasyDiag4 vehicle diagnostic application is a vehicle fault diagnosis tool software developed based on the mobile intelligent terminal platform. It is suitable for the vehicle maintenance market. It uses a dedicated connector to perform data Bluetooth interaction with the vehicle and supports one-click intelligent diagnosis. It can realize fault diagnosis for full systems such as power system and safety system, involving Read DTCs, Read Data Streams, Clear DTCs, and Reset Service Lamp. The software contains EOBD, maintenance and special function software, mainstream model diagnostic software, etc. It can meet the actual needs of most users for testing vehicles. ## Key features - Bluetooth vehicle data interaction - One-click intelligent diagnosis - Full system fault diagnosis - Read DTCs - Read Data Streams - Clear DTCs - Reset Service Lamp ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/easydiag4/id1505477232/reviews.md ### 1/5 — Don’t bother. *2024-05-22* App is awful so many glitches and can’t even submit a support request. Never buy this garbage ### 3/5 — Need new update for easydiag tool *2024-02-11* Need new update for easydiag tool I don’t know why this company stops updates for DBCar software which was working perfectly fine with iPhone! Now I have to buy new product just because the old software does not work ? This company is not reliable because after a year the softwares don’t work. ### 1/5 — Not working *2024-02-04* They told me this app doesn’t work if you updated to iOS 17 ### 1/5 — Not logging *2023-12-02* Not long in mobile ### 1/5 — Terrible *2023-07-19* Cannot log in anymore on iPhone. Says the login data could not be read ### 1/5 — Need new update for easydiag tool *2021-05-13* I don’t know why this company stops updates for DBCar software which was working perfectly fine with iPhone! Now I have to buy new product just because the old software does not work ? This company is not reliable because after a year the softwares don’t work. ### 1/5 — Horrible. Does not work at all. Registered but won’t give software or allow purchases. Useless *2020-08-01* Horrible. ## Frequently asked questions about EasyDiag4 ### What is EasyDiag4? EasyDiag4 is a vehicle fault diagnosis application that connects to your car via Bluetooth to read and clear diagnostic trouble codes, view data streams, and reset service lamps. It is designed for the vehicle maintenance market. ### What systems can EasyDiag4 diagnose? EasyDiag4 can perform fault diagnosis for full systems including the power system and safety system. It also includes EOBD, maintenance, and special function software for mainstream models. ### What devices does EasyDiag4 support? EasyDiag4 is supported on iPhone and iPod devices. It requires a dedicated connector for Bluetooth interaction with the vehicle. ### How often is EasyDiag4 updated? The latest version of EasyDiag4 is 1.0.3, which was last updated on March 27, 2023. This indicates a relatively infrequent update cycle. ### What is the age rating for EasyDiag4? EasyDiag4 has an age rating of 17+, suggesting it may contain content or complexity suitable for mature users. ### Does EasyDiag4 have ads? No, EasyDiag4 does not contain advertisements. The application is free to download and use without ad interruptions. ### What is the user rating for EasyDiag4? EasyDiag4 has a user rating of 2.9 stars based on 19 ratings. This suggests a mixed to negative user reception. ### Is EasyDiag4 suitable for all car models? EasyDiag4 contains mainstream model diagnostic software and can meet the actual needs of most users for testing vehicles. However, specific compatibility for every single car model may vary. ## Version history (last 3 releases) ### 1.0.3 — 2023-03-27 1. Fix the problem of incomplete text display 2. Fix user access errors 3. Optimization software list 4. Fix some vehicle type DTCs that cannot be selected 5. Fix the problem of stuck software decompression 6. UI display optimization 7. Fixed a bug in the software introduction 8. Function optimization ### 1.0.1 — 2020-04-25 -. More languages supported. -. Additional bugs fixed. ### 1.0.0 — 2020-04-17 No release notes. ## Apps similar to EasyDiag4 | App | Rating | Price | Category | | --- | --- | --- | --- | | [HeatNext](https://appshunter.io/ios/app/heatnext/id1440372440) | — | Free | Utilities | | [GHIA KIDS](https://appshunter.io/ios/app/ghia-kids/id1434789680) | — | Free | Utilities | | [Omni Relprev](https://appshunter.io/ios/app/omni-relprev/id1434690340) | — | Free | Utilities | | [MISD Tip](https://appshunter.io/ios/app/misd-tip/id1440174120) | — | Free | Utilities | | [佐敦](https://appshunter.io/ios/app/id1448255140) | — | Free | Utilities | | [ThinkCar pro](https://appshunter.io/ios/app/thinkcar-pro/id1527398292) | 4.6 (323) | Free | Utilities | ## More apps by Launch Tech Co., Ltd - [golo](https://appshunter.io/ios/app/golo/id694984827) - [AutoLaunch](https://appshunter.io/ios/app/autolaunch/id731793131) - [golo carcare](https://appshunter.io/ios/app/golo-carcare/id931192106) - [golo汽修大师](https://appshunter.io/ios/app/golo/id983852519) - [Auto Diag-PRO diagnosis](https://appshunter.io/ios/app/auto-diag-pro-diagnosis/id1002243564) - [EZdiag](https://appshunter.io/ios/app/ezdiag/id1038281404) All apps by Launch Tech Co., Ltd: https://appshunter.io/developer/447568418 ## Related topics [x431](https://appshunter.io/ios/topics/x431) · [launch x431](https://appshunter.io/ios/topics/launch-x431) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-04.*