OBDLink (OBD car diagnostics) vs ScanMaster for ELM327 OBD-2 Usage & Stats

***The OBDLink app exclusively works with these adapters*** - OBDLink MX+ - OBDLink EX USB (with Android 3.1 or newer) - OBDLink CX - OBDLink LX Bluetooth - OBDLink SX USB (with Android 3.1 or newer) - OBDLink Bluetooth - OBDLink MX Bluetooth - OBDLink MX Wi-Fi - OBDLink WiFi ***The app will NOT work with any other brand of OBD adapter.*** Turn your phone or tablet into a full-fledged diagnostic scan tool: read diagnostic trouble codes, clear the "Check Engine" light, check emissions readiness, estimate fuel economy and much more! Key features: - Check and clear diagnostic trouble codes - Read freeze frame data - Display real-time data (over 90 parameters!) - Customizable dashboards - Emissions readiness for each US state - Fuel economy MPG, l/100km or km/l calculation - Multiple trip meters - Log data to CSV format (compatible with Excel) - Retrieve vehicle information including VIN number and calibration ID - Oxygen Sensor Results (Mode $05) - On-board Monitoring Tests (Mode $06) - In-performance Tracking Counters (Mode $09) - GPS tracking - plot vehicle parameters on a map in real-time - Full diagnostic report that can be e-mailed - English and Metric units - Free unlimited updates - Ad-free