Comparison

OBD Scan Pro vs OpenOBD

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OBD Scan Pro

Features
Read full description

OBD Scan Pro — Professional Vehicle Diagnostics on Your iPhone Turn any ELM327 OBD-II adapter into a workshop-grade diagnostic tool. OBD Scan Pro reads real-time data from your vehicle's ECU, analyzes fault codes with AI, and produces professional PDF reports — all in English or Arabic with full RTL support. Whether you're a vehicle owner who wants to understand what the Check Engine Light means, or a mechanic who needs polished reports for customers, OBD Scan Pro gives you the insights big-name scan tools provide at a fraction of the cost. DIAGNOSTICS • Read stored, pending, and permanent DTCs from all ECU modules (PCM, TCM, ABS, BCM, SRS, HVAC) • AI-powered explanations: cause, symptoms, fix, and severity for every code • Reset Check Engine Light (Mode 04) with pre-scan and post-clear verification • Mode 06 on-board test results • Freeze frame capture — see exactly what your engine was doing when the fault triggered • Emissions readiness monitors (Catalyst, EVAP, O2, EGR, and more) LIVE DATA • 60+ live PIDs streamed from your ECU • Real-time gauges for RPM, speed, coolant, throttle, load, intake temp, MAF, fuel trim • Trend graphs over 30 second to 5 minute windows • Adaptive polling that prioritizes fast-changing sensors PROFESSIONAL REPORTS • Three scan types: Static (engine off), Live Data (5 minutes driving), or Full • Workshop-branded PDF reports with logo, technician name, and customer details • AI-generated summary, health score (A to F grade), and prioritized recommendations • GPS location tagging • Share via WhatsApp or any iOS share sheet • Full report history with iCloud sync PERFORMANCE AND ECONOMY • 0-100 km/h timer with launch detection • Quarter-mile time and trap speed • Horsepower and torque estimation from RPM and load • Live fuel economy (km/L) with eco score, CO2 estimate, and fuel cost in your local currency • Trip history with side-by-side comparisons SMART ALERTS AND MAINTENANCE • Configurable alerts for high coolant temp, low voltage, over-RPM, over-speed, oil temp, and boost pressure • Push notifications with trend tracking • AI-generated maintenance schedule personalized to your vehicle (oil, brakes, filters, tires, fluids) • Service reminders, completion tracking, and a maintenance health ring ADVANCED FEATURES • Vehicle Control: send ECU commands (fan, locks, lights) with safety interlocks • Headlamp Diagnostic: focused BCM scan with AI root-cause analysis • AI Mechanic: chat with an expert that knows your specific vehicle • AI command discovery: find manufacturer-specific OBD commands • VIN decoder for 40+ brands MULTI-VEHICLE AND CLOUD • Manage unlimited vehicles with custom profiles, colors, and odometer tracking • Multiple workshop and company profiles for branded reports • iCloud sync for reports, profiles, and history across devices • Multi-currency support for fuel prices and service costs APPLE INTEGRATIONS • Apple CarPlay support — view live data while driving • Sign in with Apple • Native dark mode • Full Arabic localization with proper RTL layout HARDWARE COMPATIBILITY Works with any ELM327 v1.5 or later OBD-II adapter: • Bluetooth Low Energy (BLE) • WiFi (TCP socket) • Auto-detects all OBD-II protocols: ISO 9141-2, ISO 14230 KWP, SAE J1850 PWM/VPW, ISO 15765 CAN Compatible with all OBD-II vehicles (1996+ in the US, 2001+ in the EU, varies by region). Premium features include unlimited PDF reports, performance testing, fuel economy, driving alerts, AI maintenance, headlamp diagnostics, and vehicle control. Free tier covers core diagnostics and live data.

About

OpenOBD

Transform your iPhone into a real-time car dashboard. Connect an OBD2 adapter to monitor live engine data, track your trips with GPS, and diagnose fault codes with clear explanations. Explore all features in demo mode without hardware.

Highlights
  • Live engine data monitoring
  • Real-time speed, RPM, temperature gauges
  • Trip logging with GPS mapping
  • Read and clear diagnostic trouble codes (DTCs)
  • Vehicle information display
  • Demo mode for exploration
Features
Read full description

OpenOBD turns your iPhone into a real-time car dashboard. Connect any ELM327 OBD2 adapter (Bluetooth or Wi-Fi) and see what your car is really doing — live. LIVE ENGINE DATA • Speed, RPM, coolant temperature, intake, throttle, engine load, battery voltage and more • Clean, fast gauges that update in real time • Instant and average fuel consumption TRIP LOGGING • Automatically record your drives with the GPS route on a map • Keeps recording in the background, even with the screen locked • Review distance, duration, speed and fuel for every trip DIAGNOSTICS • Read and clear fault codes (DTCs) with plain-language explanations • Check-engine (MIL) status and stored trouble codes • Vehicle info: VIN, fuel type, supported sensors BUILT FOR DRIVERS • Beautiful dark interface designed for the car • Works with affordable ELM327 adapters — no subscription, no account TRY IT WITHOUT HARDWARE • Tap Connect, then Demo Mode, to explore every feature with simulated live data OpenOBD is not affiliated with any car manufacturer. An OBD2 adapter (sold separately) is required to read data from your vehicle. Most petrol cars built after 2001 and diesels after 2004 are supported.

Screenshots

OBD Scan Pro4 screens
OpenOBD4 screens

Verdict

The call

The clearest difference is in-app purchases: OpenOBD at none against OBD Scan Pro's 1. OpenOBD also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBD Scan Pro sells 1 in-app purchase, starting at $2.99 per month. OpenOBD asks for nothing beyond the download.

UpkeepUpdate frequency

OBD Scan Pro ships an update every 2 weeks, OpenOBD every 2 days. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
OBD Scan Pro versus OpenOBD: the parameters behind the verdict, then further details
ParameterOBD Scan ProOpenOBD
PriceFreeFree
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.4 — better
Further details — not scored
Size27 MB36 MB
Age rating4+4+
DeveloperTariq Al-aqrabawiOsman Cengeri

In-app purchases

1 purchases

OBD Scan Pro

Subscriptions1
  • OBD Scan Pro Premium$2.991 Month
None

OpenOBD

No in-app purchases

Questions

Is OBD Scan Pro free?
OBD Scan Pro is free to download, with in-app purchases available.
Is OpenOBD free?
OpenOBD is free to download, with no in-app purchases.
Do OBD Scan Pro or OpenOBD have ads?
Neither OBD Scan Pro nor OpenOBD shows ads.
Which is updated more often, OBD Scan Pro or OpenOBD?
OBD Scan Pro ships an update every 2 weeks, and OpenOBD every 2 days. Most recently, OBD Scan Pro was updated on October 19, 2026 and OpenOBD on October 13, 2026.

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