KDIAG is a Bluetooth-enabled vehicle diagnostic tool from Shenzhen Jiawei Hengxin Technology Co.,Ltd. It captures fault codes, vehicle data streams, and other information to enable smarter maintenance with a growing user base reflected in 50,000+ total downloads and 5K downloads in the last 30 days.
Pros & Cons
Free to use with no upfront price
Bluetooth-enabled diagnostics for wireless use
Reads fault codes and analyzes data streams for maintenance
Growing user base and recent activity
Not ranked in top app lists
Less emphasis on OBD/ECU-focused terms compared with some competitors
Broad set of permissions may raise privacy considerations
About KDIAG
KDIAG is a tools app developed by Shenzhen Jiawei Hengxin Technology Co.,Ltd.
Download Statistics
KDIAG has been downloaded 91 thousand times. In the last 30 days, the app was downloaded 5 thousand times.
User Ratings
KDIAG is rated 3.76 out of 5 stars. The rating is based on 560 ratings.
App Information
KDIAG is FREE to download. The APK download size is 74.12 MB. The latest version available is 1.6.21. The last update was on July 28, 2026.
Technical Requirements
The app has a content rating of Medium Maturity. The app has been available on Google Play February 2025.
Get a detailed PDF report for KDIAG with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
I think some softwares need to be updated. I can't scan Transmission system of Toyota cars. Transmission function is not there at all. Try to work on Peugeot vehicles too.
★★★★☆urban carszambia· Apr 28, 2026
Good app and tool. I would suggest additional of other common car brands.
★★★★★Marietta Nelson· Jan 3, 2026
KONNWEI has three apps for their BT scan tool! KDIG and MAXOBD2 require the BT dongle to be plugged into the vehicle's OBD2 port. Both apps require permissions to be set manually within the app settings menu to work. KDIG app instructions say user should not connect BT dongle to phone BT and should use function to connect BT within the app!
★★★★★Heulwen Van Wyk· Oct 31, 2025
Very good app but please add the Alfa Romeo because I see there is Bugatti but no alfa?
★★★★★Сотир Сотиров· Dec 4, 2024
App works perfect! I have problem with the Opel brand with professional diagnostic. I can't connect to Opel Astra J.
★☆☆☆☆A Forrest· Nov 17, 2025
Glad I didn't buy the obd2 connector! The KDIG OBD2 on AliExpress had pictures of it having holden protocols, it doesn't even have holden in it.
★☆☆☆☆Monwabisi Nojilana· Mar 31, 2025
I bought this device and still can't connect via Bluetooth and the app.I called the konnwei dealer and can't resolve the issue. For me its jst useless and I don't encourage anyone to buy it. Konnwei 903 wireless 5 Bluetooth
★☆☆☆☆R K· Feb 20, 2025
Most functions do not work with KDIG scanner.
★☆☆☆☆Sandor· May 8, 2025
Had a lot of hope for KDIG, but it can read neither of my cars. It only shows basic info like every cheap obd does. Unfortunately KDIG OBD is useless, same as the app.
★★☆☆☆محمد ظافر· Dec 22, 2025
I've bought it for my InfinitiFX35 2007, but unfortunately, it's too poor for Nissan x Infinite cars. It doesn't even have Autosearch by VIN number for it. It is great with Kia bad with Japanese cars, I guess, because I've tried to use with Mitsubishi, and it won't even read the VIN. It keeps saying that it is out of value, for Korea car it good for Japanese is not the one to GO with.
Google Play Rankings for KDIAG
This app is not ranked
Technologies used by KDIAG
20 permissions
Subscribe to see full permission and library details
Trust & Safety: Requests a broad permission set including location, Bluetooth, storage, and phone state (and some privileged permissions). Ensure these permissions are used solely for diagnostic purposes and provide clear privacy disclosures to users.
Back to top
AppBrain Intelligence premium content
Subscribe now to get full and unlimited access to AppBrain Intelligence.
You'll have access to:
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
