TopScan

In-app purchases
1.34K reviews
Content rating
Everyone
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.
OBDII Diagnostic Scan Tool & Code Reader(Cannot support 32-bit cell phones)
Updated on
Sep 4, 2026

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

1.16K reviews
Gareth Bartlett
April 23, 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.
18 people found this review helpful
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TopDon
April 24, 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.
Mitch Adamson
October 31, 2026
absolutely love the top down top scan it's my go-to scan tool I use it more than my Autel because it does everything my Alltel does in a pocket size scanner love the scan tool I have a mechanic shop and this is the most used tool in the shop perfect for professional mechanics or DIY can't say enough good things about the scan tool would like to see the app get updated and expand on the vehicle record keeping wickedly handy now if only they had a invoicing system that worked with the topscan app
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TopDon
November 2, 2026
Thank you so much for your amazing support! 😊 We're thrilled that TopScan has become your go-to tool in your workshop! Your suggestions for improved vehicle records and an integrated invoicing system are greatly appreciated. We'll share them with our development team for consideration. Thanks for being part of TOPDON!
Justin Banbury
November 12, 2026
update. solved itself over night. Seema there was a sun delay. frustrating when sat out in the car on your drive waiting for it to work but....monetheless its all waorking now. Paid the 129 dollar subscription for the phone app but its still asking me to renew the subscription (and pay again!) and has locked down some of the functions. If not resolved will ask for money back.
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TopDon
November 12, 2026
We sincerely apologize for the frustration this has caused. Please provide your device's S/N to our Tech Support team at support@topdon.us. We will verify and resolve this matter for you. Please rest assured that we will get this taken care of.

What’s new

1.Added a preview feature for images uploaded with diagnostic reports..