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OBD Mary is an Android app designed for car diagnostics using an ELM327 Bluetooth or Wi-Fi adapter. It functions as an OBD2 scanner, live dashboard, and trip computer all in one.It allows you to read and clear engine fault codes, and on many vehicles, also access additional systems such as ABS, SRS (airbags), and HVAC.
What can you do with OBD Mary?
- Clear engine faults: Identify and clear diagnostic trouble codes (DTCs) without going to the workshop.
- Real-time gauges: Create a custom dashboard with turbo, oil temperature, RPM, and more.
- Complete diagnostics: Compatible with most brands (engine reading, and in some models, ABS/Airbag).
- No ads: Enjoy the full version without annoying banners.
The Premium (Pro) version removes ads and unlocks full system diagnostics (such as ABS and airbag systems), advanced sensor data, and enhanced ECU coding features - making it a better choice for more in-depth maintenance.
Important information:
You’ll need an ELM327 adapter for this to work. The developer warns that cheaper ELM327 v2.1 adapters can be unreliable, so opting for a v1.5 version is recommended. The app supports a wide range of car brands, including Audi, BMW, Ford, Toyota, Volvo and more.
Instructions: (How to claim)
Install the app via Play Store
- After installation and setup, go to the Menu and select “Full Edition” at the bottom – this should display a price on the next page.
- Tap “Buy for P195.00”.
- A pop-up will appear showing a “Christmas / New Year gift” message, confirming that the premium version has been unlocked for free.
Note: The Pro licence is tied to the app installation and remains valid as long as it stays installed on your device.
