OBD Vault vs OBD2+

OBD Vault reads vehicle data through a compatible ELM327 Bluetooth Low Energy (BLE) or Wi-Fi/TCP OBD-II adapter. An adapter and a vehicle are required for live readings and new scans. Bluetooth Classic adapters are not supported on iPhone. Available readings depend on your vehicle, ECU and adapter. Wi-Fi recording requires OBD Vault to remain open with the screen on; it pauses when you leave the app or lock the screen. You can keep the Live Data screen open while recording. SCAN AND UNDERSTAND Read confirmed, pending and permanent diagnostic trouble codes, supported sensor readings and emissions readiness information. Review stored freeze-frame data when the ECU provides it. Code explanations and suggested checks are guidance; they do not identify a confirmed root cause or certify that a vehicle is safe to drive. LIVE DATA AND TRIPS View supported live readings such as engine RPM, speed and coolant temperature. Record trips, review distance and sensor history, and keep diagnostic scans separate from trip records. View ECU-reported fuel flow when supported, or an estimate when the required readings and fuel profile are available. Recalculate estimated fuel use for saved trips when the necessary sensor history was recorded. VEHICLE PROFILE When VIN is unavailable, optionally select your make, model and engine before your first scan. Search an offline catalog of 433 makes and 10,871 models. Engine choices are tied to the selected model and show capacity, fuel and available power. Manual entry remains available for missing variants. YOUR HISTORY, OFFLINE Save scans and trips on your phone without an account. Review saved history locally. File export requires active paid access. Clearing fault codes is a separate manual action that requires confirmation and shows the ECU response. VEHICLE PLANS, CLOUD AND YOUR OWN AI Local scanning, live data and history for one vehicle are free. Paid plans cover a total of 1, 3 or 10 vehicles and include cloud synchronization, access from your own AI assistant through Model Context Protocol (MCP), and file exports. Choose monthly, annual or lifetime access. Monthly and annual subscriptions renew automatically until canceled in your store account. Lifetime is a one-time purchase. Current prices and purchase terms are shown in the app. Sign in to synchronize saved records across devices. Your external assistant and account must support adding an MCP connector; set up that connection separately in your assistant. The app shows setup guidance after your first successful scan. OBD Vault does not run an AI model, and its connector cannot send commands to your vehicle. OBD Vault supports standard OBD-II diagnostics and selected manufacturer-specific control units and readings where a supported reference is available. Coverage depends on your vehicle, ECU and adapter. It does not provide comprehensive manufacturer coverage, ECU coding or active tests. It is not a replacement for inspection or advice from a qualified technician. Vehicle data by VehiclesDB (vehiclesdb.com). Additional source data: FuelEconomy.gov (DOE/EPA) and European Environment Agency. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.