OBD2 Car Diagnostics vs OBD2+

OBD2 Car Diagnostics puts a professional-grade fault code reference and vehicle maintenance tracker right in your pocket. Whether your check engine light just came on or you want to stay ahead of routine service, this app gives you the clarity you need. INSTANT DTC LOOKUP Search thousands of OBD2 diagnostic trouble codes by code number, description, or vehicle system. Each code entry shows the affected system, plain-English description, and a severity rating — Critical, High, Medium, or Low — so you know exactly how urgent the issue is. FILTER BY SYSTEM AND SEVERITY Quickly narrow results by vehicle system (engine, transmission, ABS, airbag, EVAP, and more) or by severity. Save codes you care about with a single tap and review them anytime in the Saved tab. MULTI-VEHICLE GARAGE Add all your cars, trucks, or motorcycles. Each vehicle shows its current odometer reading and a colour-coded maintenance health ring at a glance. Track make, model, year, and mileage for every vehicle in one place. MAINTENANCE REMINDERS Set odometer-based service reminders for oil changes, tyre rotations, brake inspections, air filters, and more. The Dashboard immediately surfaces any service that is due or overdue so nothing slips through the cracks. SERVICE HISTORY AND COST TRACKING Log every service visit with date, odometer, cost, and notes. View running totals per vehicle and share a full service report as plain text whenever you need it for insurance, resale, or your own records. Key features: - Offline DTC database — no internet connection required - Severity ratings: Critical, High, Medium, Low - Filter by category and severity simultaneously - Save and manage fault codes per vehicle - Odometer-based maintenance reminders - Full service log with cost tracking - Share vehicle reports in plain text - Dark mode support

OBD2 Plus is a vehicle diagnostic app for iPhone that connects to a compatible Wi-Fi OBD2 / ELM327 adapter. IMPORTANT: A compatible Wi-Fi OBD2 adapter is required to obtain vehicle data. The adapter is not included with the app and must be purchased separately. Connect the OBD2 adapter to your vehicle's OBD2 port, then connect your iPhone to the adapter's Wi-Fi network. Main Features • Real-time vehicle speed • Engine RPM • Coolant temperature • Engine load • Intake air temperature • Intake manifold pressure • MAF air flow • Throttle position • Fuel level • Vehicle voltage • Hybrid-related data on supported vehicles • VIN reading • Diagnostic Trouble Code (DTC) reading • DTC clearing • Real-time CAN communication monitoring • CAN ID filtering • RAW CAN data and bit-level display • Manual OBD2 command transmission • Advanced CAN frame transmission • Communication log saving and sharing • Driving location display using iPhone location services Compatible Hardware OBD2 Plus is designed for Wi-Fi-enabled OBD2 adapters, including compatible ELM327-based devices. Requirements: • iPhone • Wi-Fi-enabled OBD2 / ELM327-compatible adapter • Vehicle equipped with a compatible OBD2 port Bluetooth-only OBD2 adapters are not supported. Compatibility and available data may vary depending on the vehicle model, model year, ECU, vehicle specifications, and OBD2 adapter. Location Services If location access is permitted, OBD2 Plus can use the iPhone's location information to display the current or recorded driving position on a map. Location access is optional. OBD2 diagnostic features that do not require location information can still be used without location permission. Privacy Vehicle data, VIN, DTCs, CAN data, OBD2 communication data, and location information are generally processed locally on the user's iPhone. OBD2 Plus does not transmit this vehicle information or location information to external servers managed by the developer. The app does not require user registration or login. Safety Use OBD2 Plus only when the vehicle is safely stopped. Do not operate the app or your iPhone while driving. Clearing DTCs does not repair the underlying cause of a vehicle fault. If the cause remains unresolved, the diagnostic trouble code or warning light may return. CAN transmission features are intended for users who understand vehicle communication. Sending incorrect CAN frames may cause unexpected vehicle ECU behavior. After use, disconnect the OBD2 adapter from the vehicle if appropriate to avoid unnecessary auxiliary battery drain.