TopScan

In-app purchases
3.4
911 reviews
100K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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
Nov 18, 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

3.3
786 reviews
James Salters
September 21, 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*
7 people found this review helpful
Did you find this helpful?
TopDon HK
April 16, 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.
Look Up
August 29, 2024
Edit- When the app doesn't "time out due to endless loading" or refuse to show every make/model, it is good. Not a bad app or device. It won't auto read any vin I have tried it on, but this device smokes any basic elm 327 device. Definitely worth the cost. I wish I had known it had a companion pro version for $50 more before buying this one, but I don't regret my purchase. Decent bidirectional controls.
9 people found this review helpful
Did you find this helpful?
TopDon HK
April 11, 2025
We sincerely apologize for the inconvenience you've experienced and completely understand your frustration. Please capture a video of the issue and send it to support@topdon.com - our support team will prioritize resolving this for you. Your feedback is very important to us as we strive to provide better service.
Tami K
April 20, 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
Did you find this helpful?
TopDon HK
April 23, 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.

What’s new

Bug fixes and performance improvements.