ScanMaster for ELM327 OBD-2

In-app purchases
17K reviews
Content rating
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About this app

ScanMaster Lite is an application for vehicle diagnostics to OBD-2/EOBD standards. It "transforms" your Android smartphone or tablet together with an ELM327 diagnostic interface to a vehicle diagnostic device. Many important OBD-2 functions are despite "Lite" available without restriction. Only the number of parameters and error codes are limited compared to the Pro version. The paid Pro version with even more features can be purchased via In-App Billing function.

The following ELM327 and compatible OBD2 interfaces are supported:
UniCarScan UCSI-2000/2100
     APOS BT OBD 327
     OBDLink MX/MX+
     OBDLink LX
     OBDLink Bluetooth and WiFI
     ELM327 Bluetooth and WiFi
Pearl Lescars Bluetooth and WiFi

The interfaces can be purchased on our websites or if required.

Everything completely in German and English. In the graphical representation of data, there are "pause" function. In this mode, the recorded data can be scrolled and zoomed by gesture.

We would greatly appreciate the feedback on the app. Please send us an email about your experiences, opinions or suggestions.
Updated on
Sep 10, 2023

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 and App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

15.7K reviews
Danny Iwama
October 1, 2022
I bought the Pro version, and it's worth the price. I'm a Smog Tech and when I need to show a customer the state of their vehicle this app displays the codes and monitors with a lot of clarity. I don't like that all the of the Freeze Frame data such as Fuel Trim information is not displayed. There had been times when Permanent Codes were not displayed. Since the last update, you need to use the Dark Theme to view the control buttons, such as the ones used to select data pids.
88 people found this review helpful
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A Google user
September 10, 2019
This was one of the best obd2 scanner apps that I've used. I use it on my win7 laptop and on my Android phone. The problem I have now is it worked fine with my ELM327 adapter last year. Just tried it again and the app connects to the dongle on Bluetooth, but gives an error as if the ECM is off and it is not. Looks like I lost something when the app was updated . I hope they can fix this because I do not want to buy a different dongle just to work with this app
112 people found this review helpful
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milen bojinov
January 5, 2024
I'm trying to connect on the lite version but havent achieved it yet. My elm327 adapter is paired and recognized by the galaxy A32, ingition ON, try BT1, BT2 and then error no device found..😞followed help instruction to start all over again numerous times and hasn't work for me so far...with a other application I achieved connection but didn't have model Kia Carnival 2.9 CDRi so was worthless..I hope you guys can help me get connected and see if this app is good for me. Thank you in advance.
12 people found this review helpful
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January 5, 2024
Open the settings of the app, go to the connections and select your adapter as Bluetooth device.

What's new

Lots of optimizations and improvements