Comparison

OBD Scan Pro vs Tune

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
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OBD Scan Pro — Professional Vehicle Diagnostics on iPhone and iPad 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 • Designed for iPad as well as iPhone • 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 up to 20 full diagnostic scans a day with AI reports, performance testing, fuel economy, driving alerts, AI maintenance, headlamp diagnostics and vehicle control, and Premium removes ads. The free tier covers core diagnostics and live data, with ads.

About

Tune

Features
Read full description

Tune-Up Connect turns your phone into the display and the logger for your car. It connects to two things at once: the ECU in your BMW, over a Wi-Fi OBD adapter or a wired ENET cable, and a GPS timing box over Bluetooth. You get live boost, air fuel ratio, ignition timing and temperatures at the rate your ECU can actually answer, and accurate speed from a 10 Hz GPS receiver at the same time. WHAT YOU CAN DO Live gauges. Pick the channels you care about and lay them out the way you want. Boost is drawn against the ECU's own boost target, so the gap opens up in front of you the moment something is off. Speed runs. 0 to 100 km/h, 0 to 60 mph, quarter mile, roll ons, braking distances. Timing comes from Doppler ground speed rather than from position differences, and every result carries the speed accuracy it was measured at, so you know whether to trust it. Combined logging. Record ECU channels and GPS into one session on one clock. That is what lets you see what the engine was doing at the exact moment the car was pulling. Shift beep. Set an rpm, get a single beep as you cross it, and watch the boost bar flash. Off until you turn it on. Upload. Sign in and send a recording straight to your tuning job, ready for your tuner to read. IF YOU TUNE WITH TUNE-UP Signing in pulls your jobs, your maps and every revision from Tune-Up Console. Pick the revision before you record, and the log reaches the shop already tagged with the car, the map and the revision it was made on. Comparing two revisions is then a matter of reading two logs rather than working out which log was which. When a new revision is added to your tune, the app notices and offers to record into that one instead. Everything above this section works without an account. The upload side is there for customers, not a requirement for using the app. WHAT YOU NEED A BMW with a compatible ECU, and either a Wi-Fi OBD adapter or an ENET cable to reach it. For timing, a Tune-Up Record, Dragy or RaceBox device. The app reads only. It never writes to the ECU and never changes your calibration. TRYING IT WITHOUT A CAR Open the Profile tab and switch on Demo mode. The app simulates a connected car and a connected GPS device, and every screen behaves exactly as it does on a real drive. SAFETY Start a recording before you set off, or let a passenger handle the phone. The timing features are meant for a closed course or a private road, not for public roads.

Screenshots

OBD Scan Pro4 screens
Tune4 screens

Verdict

The call

The clearest difference is in-app purchases: Tune at none against OBD Scan Pro's 1. Tune also leads on ads (none vs shown). On price, 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. Tune asks for nothing beyond the download.

Scorecard2 real differences · 4 level
OBD Scan Pro versus Tune: the parameters behind the verdict, then further details
ParameterOBD Scan ProTune
PriceFreeFree
Update frequencyEvery 2 weeks—
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.616.4 — better
Further details — not scored
Size35 MB36 MB
Age rating4+4+
DeveloperTariq Al-aqrabawiSitthichai Sirikajorn

In-app purchases

1 purchases

OBD Scan Pro

Subscriptions1
  • OBD Scan Pro Premium$2.991 Month
None

Tune

No in-app purchases

Questions

Is OBD Scan Pro free?
OBD Scan Pro is free to download, with in-app purchases available.
Is Tune free?
Tune is free to download, with no in-app purchases.
Do OBD Scan Pro or Tune have ads?
OBD Scan Pro shows ads; Tune does not.

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