OBD Mary — simple and powerful Android OBD2 scanner with trip computer
What it does
OBD Mary connects to a reliable ELM327 adapter (Bluetooth/BLE or Wi-Fi) to read/clear DTCs, stream real-time sensor data, build custom gauge dashboards, log trips and record parameters to CSV for later analysis.
Highlights
Compatibility
• Vehicles: OBD2/EOBD-compliant petrol and diesel cars/light trucks (actual coverage depends on ECU).
• Adapters: genuine-chip ELM327 Bluetooth/BLE or Wi-Fi recommended for stable refresh rates.
• OS: Android 5.0+ (phone/tablet).
• Package here: Obd_Mary_v1.250_250_Premium.apk.
Quick start
Tips: use quality adapters, keep ventilation during tests, and save logs before clearing codes so you can track repairs.
Tested environment
Verified on Android 12/13 with genuine-chip Bluetooth and Wi-Fi ELM327 adapters; designed to operate on Android 5.0–14.
Disclaimer
This description summarizes public information for educational/archival purposes. Any files referenced are hosted by third parties and were uploaded by unknown users; our community does not claim ownership. Rights holders may contact us for prompt assistance.


What it does
OBD Mary connects to a reliable ELM327 adapter (Bluetooth/BLE or Wi-Fi) to read/clear DTCs, stream real-time sensor data, build custom gauge dashboards, log trips and record parameters to CSV for later analysis.
Highlights
- Diagnosing: read and clear trouble codes from supported ECUs; view code status and descriptions.
- Dashboards: create your own gauge layouts and styles for RPM, speed, temps, voltage, load and more.
- Params: Live Data, Freeze Frame, on-board monitoring and more per ECU support.
- Trip statistics: automatic trip logging with distance, time, average speed and fuel usage.
- Data recording: select PIDs to log, view graphs and export CSV files.
- Clean UI: quick access to Dashboard, Diagnosing, Trip Computer and Data Recording.
Compatibility
• Vehicles: OBD2/EOBD-compliant petrol and diesel cars/light trucks (actual coverage depends on ECU).
• Adapters: genuine-chip ELM327 Bluetooth/BLE or Wi-Fi recommended for stable refresh rates.
• OS: Android 5.0+ (phone/tablet).
• Package here: Obd_Mary_v1.250_250_Premium.apk.
Quick start
- Plug in the ELM327 adapter and turn ignition to ON.
- Pair via Bluetooth/BLE (or connect via Wi-Fi) and open OBD Mary.
- Use Diagnosing to scan/clear codes or Dashboard for live gauges.
- Enable Data recording to save CSV logs; check Trip Computer for statistics.
Tips: use quality adapters, keep ventilation during tests, and save logs before clearing codes so you can track repairs.
Tested environment
Verified on Android 12/13 with genuine-chip Bluetooth and Wi-Fi ELM327 adapters; designed to operate on Android 5.0–14.
Disclaimer
This description summarizes public information for educational/archival purposes. Any files referenced are hosted by third parties and were uploaded by unknown users; our community does not claim ownership. Rights holders may contact us for prompt assistance.





