Comparison

OBD2 Car Scanner vs RevPilot

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

Head to head
About

OBD2 Car Scanner

Transform your smartphone into a professional car diagnostic tool. This app reads and clears trouble codes, monitors live engine data, and uses AI to explain issues and provide repair guidance. It works with most vehicles and OBD2 adapters.

Highlights
  • Full DTC Fault Code Scanner
  • Live Sensor Data & Custom Dashboards
  • Continuous Data Logging
  • Emissions Readiness Check
  • AI Car Doctor for issue explanation
  • Interactive AI Repair Guides
  • Smart Pre-Inspection
Features
Read full description

Turn your smartphone into a professional, dealership-level car diagnostic tool with OBD2 Car Scanner! Built as a comprehensive OBD2 scanner and smart code reader, OBD2 Car Scanner connects seamlessly to your vehicle via any Bluetooth/Wi-Fi adapter to unlock, track, and manage your engine's performance. WE DO EVERYTHING A STANDARD SCANNER DOES—AND MORE: Cafix includes all the powerful, technical features you expect from a premium diagnostic tool: - Full DTC Fault Code Scanner: Scan, read, and clear both generic and manufacturer-specific trouble codes (CEL/DTC) to turn off the Check Engine Light. - Live Sensor Data & Custom Dashboards: Monitor real-time graphs for engine RPM, coolant temperature, fuel system status, and oxygen sensors. - Continuous Data Logging: Automatically record and save your vehicle's trip history and performance metrics while you drive. - Emissions Readiness Check: Determine if your car is ready for testing and analyze ECU self-monitoring data. THE OBD2 CAR SCANNER ADVANTAGE: WHY RAW DATA IS NOT ENOUGH Standard OBD2 scanners just throw confusing error codes and complex charts at you, leaving you to guess what is actually wrong. OBD2 Car Scanner changes that with advanced AI Car Diagnostics: - From Raw Data to Real Solutions: When a fault occurs, our built-in AI car doctor evaluates your recorded data history, translates technical jargon into plain language, and tells you exactly what triggered the issue. - Interactive AI Repair Guides: Open a chat directly with the AI assistant to ask how severe the bug is, what parts are needed, and get step-by-step instructions on how to troubleshoot. - Smart Pre-Inspection: Know the precise fix before visiting the garage, giving you the ultimate blueprint to talk to mechanics with confidence and avoid overpriced diagnostic fees. WIDE COMPATIBILITY: Cafix works with most vehicles built after 2000 (and some as early as 1996) and is compatible with almost all premium OBD2 hardware adapters: ELM 327, FixD OBD, Bluedriver, Veepeak OBD, Torque OBD, Torque Pro, OBD Doctor, OBD Fusion, Carly OBD, Vgate, Carista, LELink, and more. Stop guessing and start knowing. Experience the next generation of vehicle care with OBD2 Car Scanner: AI Fix Notice: OBD2 Car Scanner is free-to-install but features premium tools available through subscription. Non-subscribed users can access core features with daily limits. Manage auto-renewals in your account settings. SUBSCRIPTION & PURCHASE INFORMATION - Unlock premium features with subscription: weekly, monthly and yearly. - Payment will be charged to your iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24 hours prior to the end of the current period. - You can manage or turn off auto-renew in your Apple ID Account Settings any time after purchase. Privacy Policy: https://xhao.app/privacy-policy Terms of Service: https://xhao.app/terms-of-service

About

RevPilot

Features
Read full description

RevPilot – Professional OBD-II Scanner, Live Data & Performance Turn your iPhone into a professional-grade OBD-II scan tool. RevPilot was built for drivers, enthusiasts, tuners, and technicians who want more than just reading check engine lights. Monitor your vehicle in real time, record professional datalogs, run performance tests, and prepare for emissions inspections—all from one powerful app. Whether you’re diagnosing a daily driver, tuning a performance build, or getting ready for a Smog Check, RevPilot gives you the tools you need. PROFESSIONAL DIAGNOSTICS • Read and clear Check Engine Light (MIL) codes • View detailed Diagnostic Trouble Codes (DTCs) • Monitor emissions readiness monitors • Freeze Frame data • Pending and stored fault codes • Vehicle Information (VIN when supported) GUIDED SMOG CHECK One of RevPilot’s signature features. Instead of guessing what to do after clearing codes or disconnecting the battery, Guided Smog Check walks you through the drive cycle step by step. • Monitor emissions readiness in real time • Track monitor completion • Know which monitors are still incomplete • Reduce unnecessary trips for emissions inspections ADVANCED LIVE DATA Monitor your vehicle with professional real-time gauges. Track hundreds of supported parameters depending on your vehicle, including: • RPM • Vehicle Speed • Coolant Temperature • Intake Air Temperature • Mass Air Flow (MAF) • Throttle Position • Engine Load • Fuel Trim • Oxygen Sensors • Ignition Timing • Intake Manifold Pressure • Fuel Pressure • Battery Voltage …and many more supported sensors. PROFESSIONAL DATALOGGING Record complete driving sessions for later analysis. Perfect for: • Performance tuning • Troubleshooting • Dyno sessions • Track days • Street tuning • Comparing modifications Replay your logs and review supported vehicle parameters after every drive. PERFORMANCE TESTING Measure your vehicle’s performance with built-in acceleration testing. Supported tests include: • 0–60 mph • 0–100 km/h • Quarter Mile • Custom acceleration tests Great for comparing modifications and tracking improvements over time. MULTI-MODULE DIAGNOSTICS Go beyond the engine. Depending on vehicle support, RevPilot can access multiple electronic control modules. Including: • Engine • Transmission • ABS • Airbag (SRS) • Body Control Module • Steering • Instrument Cluster …and other supported modules. SMART VEHICLE GARAGE Manage multiple vehicles in one place. • Automatic VIN detection (supported vehicles) • Vehicle history • Saved scans • Saved datalogs • Performance history BUILT FOR ENTHUSIASTS Whether your vehicle is stock or highly modified, RevPilot is designed to help you understand exactly what’s happening inside your engine. Ideal for: • DIY mechanics • Automotive enthusiasts • Performance tuners • Track day drivers • Fleet owners • Everyday drivers REVPILOT PREMIUM Unlock advanced features with RevPilot Premium. Premium includes: • Advanced Live Data • Professional Datalogging • Performance Testing • Multi-Module Diagnostics • Additional diagnostic features as they become available Start with a FREE 7-day trial. COMPATIBILITY Compatible with most ELM327 Bluetooth OBD-II adapters for iPhone. Vehicle support varies depending on manufacturer, model year, ECU, and adapter capabilities. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OBD2 Car Scanner4 screens
RevPilot4 screens

Verdict

The call

The clearest difference is update cadence: OBD2 Car Scanner at weekly against RevPilot's every 2 weeks. OBD2 Car Scanner also leads on iOS requirement (15.5 vs 26.0). On price, ads, in-app purchases and device support 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. OBD2 Car Scanner sells 3 in-app purchases, starting at $6.99 per 7 days and RevPilot sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OBD2 Car Scanner ships an update weekly, RevPilot every 2 weeks. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
OBD2 Car Scanner versus RevPilot: the parameters behind the verdict, then further details
ParameterOBD2 Car ScannerRevPilot
PriceFreeFree
Rating4.2 (6 ratings) — better—
Number of ratings6 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better26.0
Further details — not scored
Size136 MB53 MB
Age rating4+4+
DeveloperTHI MY HAO TRANFelipe spada

In-app purchases

3 purchases

OBD2 Car Scanner

Subscriptions3
  • Weekly - Unlimited Access$6.997 Days
  • Monthly - Unlimited Access3 Days trial$16.991 Month
  • Yearly - Unlimited Access$59.991 Year
1 purchases

RevPilot

Subscriptions1
  • RevPilot Premium$9.991 Month

Questions

Is OBD2 Car Scanner free?
OBD2 Car Scanner is free to download, with in-app purchases available.
Is RevPilot free?
RevPilot is free to download, with in-app purchases available.
Do OBD2 Car Scanner or RevPilot have ads?
Neither OBD2 Car Scanner nor RevPilot shows ads.
Which is updated more often, OBD2 Car Scanner or RevPilot?
OBD2 Car Scanner ships an update weekly, and RevPilot every 2 weeks. Most recently, OBD2 Car Scanner was updated on October 31, 2026 and RevPilot on October 24, 2026.

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