TopScan

In-app purchases
3.6
849 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Connect the Topscan to your Phone via Bluetooth and turn your devices into a smart and powerful diagnostic tool! The Bluetooth OBDII scan tool is loaded with essential features such as full OBDII functionality, full system diagnosis, Bi-Directional controls, AutoVIN, automatic diagnostic reports, and more. Eight maintenance service functions and coverage for 40+ vehicle brands make the Topscan a versatile and portable auto scanner for technicians.

Key Features:
1. Full System Diagnosis: Engine, Transmission, Airbag, ABS, ESP, TPMS, Immobilizer, Gateway, Steering, Radio, Air Conditioning and more.
2. All-system diagnostic basic functions: access ECU info, read fault codes, clear fault codes, read data stream.
3. 8 special functions: Oil Reset, Throttle Adaptation, EPB Reset, BMS Reset, and more.
4. Bi-directional control to target problems easily.
4. AutoVIN for automatic vehicle identification and quick diagnosis.
5. Wireless Connection, Bluetooth 5.0 with a range of 33 feet/10m. Works on Android 7.0/iOS 10.0 or above, compact and portable.
6. Repair Data Library: DTC Repair Guide, Technical Service Bulletin, DLC Location, Warning Light Library.
7. Graph, value and dashboard-like data display for easy interpretation. 
8. Generate Diagnostic reports for System, Fault Codes, or Data Streams.
9. Feedback function enables users to submit issues and requests to us in a convenient way.
Updated on
Sep 19, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Photos and videos and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.5
738 reviews
James Salters
21 September 2025
price is a bit much. not everything needs to be a long term subscription service for over $100. this was a great product that has been ruined by a paywall some things are kinda hidden but a couple minutes of poking around and you should find everything just fine. Tons of options. Gives you the code and what the code is then it gives you links of how to fix the problem. I'm truly impressed. *home mechanic*
3 people found this review helpful
Did you find this helpful?
Topdon
16 April 2025
Thank you for your 5-star review! We're happy that our products have been helpful to you. If you ever have suggestions or need assistance, don't hesitate to reach out at support@topdon.com.
Tami K
20 April 2025
It cleared my secure DTCs which saved me $$ and time towing car to dealer and paying them to clear them. However, it wasn't completely intuitive how to navigate within the app to figure out how to clear the codes. Once found, it was seconds to fix. But it took me over an hour to figure out where the setting was within the app.
5 people found this review helpful
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Topdon
23 April 2025
Thank you sincerely for choosing Topscan and sharing your detailed experience! We genuinely apologize for the navigation challenges you encountered—we fully understand how frustrating time-consuming feature searches can be. Your feedback is invaluable, and we’re taking immediate action with:HD tutorial videos.
Gareth Bartlett
23 April 2025
Hit and miss. Connects occasionally. Recently been trying to connect to diagnose a fault and it just fails. I know there is a fault, there is a light on. Never automatically finds the car's VIN, always have to go in manually. Could be so much better and why at each stage does it say establishing communication when it's already communicating.
10 people found this review helpful
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Topdon
24 April 2025
We sincerely apologize for the inconvenience and fully understand your frustration. Please provide the device SN and vehicle VIN to support@topdon.com, and our after-sales team will prioritize resolving your issue. Your feedback is invaluable to us, and we are committed to delivering better service.

What's new

1. Enabled code reading after diagnostic software expiration.
2. Added Engine Inspection to the app homepage.
3. Added third-party login via Google and Apple.
4. Added zoom in/out support for the data stream combination view.