ScanMaster Lite turns Android devices into a versatile OBD-2 diagnostic tool that works with ELM327-compatible interfaces over Bluetooth or Wi-Fi. It offers extensive OBD-2 functionality, with a Pro upgrade available via In‑App Billing, and supports German and English. With 5,000,000+ total downloads and 23K in the last 30 days, it maintains a strong presence in the COMMUNICATION category across multiple locales (AT #55, SK #83, PL #103).
Pros & Cons
Large installed base with 5,000,000+ total downloads
Broad compatibility with Bluetooth and Wi‑Fi OBD interfaces
Dual-language support (German and English)
Free to start with Pro features unlocked via In‑App Billing
Continual updates and optimizations (as shown by recent changes)
Lite version limits the number of parameters and error codes compared to Pro
Requires a compatible OBD interface (ELM327 or equivalent) for full functionality
Some advanced features available only in Pro via in‑app purchase
About ScanMaster for ELM327 OBD-2
ScanMaster for ELM327 OBD-2 is a communication app developed by WGSoft.de.
Install Statistics
ScanMaster for ELM327 OBD-2 has been downloaded 5.2 million times. In the last 30 days, the app was downloaded 23 thousand times.
User Ratings
ScanMaster for ELM327 OBD-2 is rated 4.08 out of 5 stars. The rating is based on 18 thousand ratings.
App Information
ScanMaster for ELM327 OBD-2 is freely available from Google Play. The APK size is 12.12 MB. The latest APK version available is 5.14. The last update was on August 4, 2026.
Technical Requirements
ScanMaster for ELM327 OBD-2 requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since June 2012.
Description by WGSoft.de(from Google Play)
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 https://www.wgsoft.de/shop/ or https://www.obd-2.de/shop/ 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.
Recent changes: Lots of optimizations and improvements
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Comments on ScanMaster for ELM327 OBD-2 for Android
★★★★★Zakir Sultan Awan· Oct 17, 2025
Connects easily and am able to clear error codes
★★★★★Alexandros Mandilaras· Dec 1, 2024
The app is very good and definitely worth getting the pro version. The developer responded quickly to a problem I had, thanks a lot!
★★★★★Andrew Freeman· Sep 18, 2025
So far so good. Free does everything and more that I need it to do with my 2006 BMW 325i
★★★★☆Michael Paisis (PofC)· May 9, 2025
It connects easily, and it gives u many parameters to look at. But you need a PhD in engineering to understand it most of it. Simple ones are fine but if each included a simple explanation it will make this app the best in the market; Also another thing is that I can't email the log files or download them in txt or notepad++ files, so we can easily read them.
★★★★★Momchil Milev· Mar 23, 2025
Really good and reliable app, no ads or bloatware... German made!
★★☆☆☆Adam B· Jun 2, 2026
Nothings for free. You can't use it unless you pay. Some other apps let you use a lot of the functions for free
★☆☆☆☆Cyrus Stothard· Nov 10, 2024
App doesn't work. Constant error when attempting connection or to find adapter
★☆☆☆☆Grant Esterhuyse· Oct 27, 2025
How does one test the Lite or Free version to make sure all the functionality in the paid version is what you want. Huh ?
★☆☆☆☆Arni Bjorn Olafsson· Oct 4, 2026
Trying it as an alternative app for what I have used, but it does not work with elm327 mini Bluetooth.
Google Play Rankings for ScanMaster for ELM327 OBD-2
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Trust & Safety: Permissions include location (coarse and fine), network state, Bluetooth, storage, Internet, foreground service, and billing, plus a dynamic-receiver permission. This set aligns with standard needs for OBD-2 diagnostics apps and supports persistent operation and in‑app purchases; overall, the permissions reflect typical safety expectations for this category.
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.
