Comparison

MotorBit OBD 2 vs Auto AI Diagnostics

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

Head to head
About

MotorBit OBD 2

Features
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MotorBit OBD2 – Professional Vehicle Diagnostics & Engine Analysis Diagnose your vehicle like a professional service tool. MotorBit OBD2 is an advanced vehicle diagnostics and analysis app that works with ELM327-compatible Bluetooth adapters. View real-time sensor data, read and clear fault codes, perform performance tests, and analyze your engine data in detail. Free Features Bluetooth Connection β€’ Compatible with ELM327 Bluetooth adapters β€’ Supports Bluetooth LE (4.0+) and MFi β€’ Automatic and manual connection options β€’ Fast device scanning Live Dashboard β€’ Engine RPM, speed, temperature β€’ Throttle position and engine load β€’ Fuel pressure and intake manifold pressure β€’ Lambda sensor and fuel level β€’ Professional service tool-style interface Fault Codes (DTC) β€’ Read P, C, B, and U codes β€’ English fault descriptions β€’ Clear fault codes β€’ Freeze frame data β€’ Check Engine (MIL) status Live Graphs β€’ Real-time sensor graphs β€’ Multi-parameter display β€’ Zoom and scroll support β€’ CSV and JSON data export OBD-II Monitors β€’ Emissions system status β€’ Readiness tests β€’ ECU information and calibration ID MotorBit Pro Features Performance Tests β€’ 0–100 km/h acceleration test β€’ 100–0 km/h braking test β€’ Quarter mile (1/4 mile) test β€’ Engine power analysis Statistics β€’ Driving distance and duration β€’ Average and maximum speed β€’ Fuel consumption analysis β€’ Trip computer Advanced Diagnostics β€’ VIN decoding (vehicle information) β€’ Detailed freeze frame analysis β€’ Emissions monitors β€’ Fuel trim analysis (STFT / LTFT) Data Logging & Reporting β€’ Record sensor data β€’ CSV and JSON export β€’ Generate PDF reports β€’ Dated history logs Custom PID Support β€’ User-defined parameters β€’ Custom formula support β€’ Advanced sensor integration ELM327 Terminal β€’ Direct ELM327 commands β€’ AT command support β€’ OBD commands (Mode 01–09) β€’ Command history Supported Devices β€’ ELM327 Bluetooth (v1.5+) β€’ OBDLink MX+, LX, CX β€’ Vgate iCar Pro β€’ BAFX Products β€’ ScanTool OBDLink β€’ Veepeak Mini / Plus β€’ Carista OBD2 β€’ All ELM327-compatible adapters Supported Protocols β€’ ISO 9141-2 β€’ ISO 14230-4 (KWP2000) β€’ ISO 15765-4 (CAN) β€’ SAE J1850 PWM β€’ SAE J1850 VPW Design & Performance β€’ Professional service tool interface β€’ Dark theme (eye-friendly) β€’ High-contrast gauges β€’ Real-time data updates β€’ Optimized Bluetooth communication Privacy β€’ All data is stored on your device β€’ No data is sent to servers β€’ No ads or tracking Demo Mode You can try the app even without an OBD-II adapter. Test all features with simulated data in demo mode. Use Cases β€’ Engine fault detection β€’ Check Engine light diagnostics β€’ Emissions test preparation β€’ Fuel consumption analysis β€’ Performance measurement β€’ Vehicle maintenance tracking β€’ Used car inspection Support www.motorbit.o2canyon.com Notes β€’ Works with vehicles that support the OBD-II standard (1996+) β€’ Requires an ELM327-compatible Bluetooth adapter β€’ Do not use while driving β€’ Consult a professional service for critical issues Access your vehicle’s engine data, detect faults, and analyze performance with MotorBit OBD2. Professional vehicle diagnostics are now in your pocket.

About

Auto AI Diagnostics

Features
Read full description

Your check engine light is on. Now what? Auto AI Diagnostics turns your iPhone into an AI-powered car diagnostic tool. Plug a Bluetooth OBD2 adapter into the port under your dash, tap scan, and AXEL β€” your AI shop foreman β€” reads the fault codes straight from your car's computer and explains what's going on in plain English or Spanish: what's happening, how serious it is, whether it's a DIY fix or a shop job, and what to do next. FEATURES: β€’ Real fault codes pulled straight from your car's computer β€” engine and control modules β€’ Automatic VIN read directly from your vehicle's ECU β€’ AI-powered diagnosis with evidence and an action plan β€” not just a code definition β€’ Fault code descriptions verified against the web for accuracy β€’ View Conditions: see the mileage, battery voltage, and speed recorded when each fault set β€’ Live engine data β€” RPM, coolant temp, battery voltage, throttle, and more β€’ Odometer tracking with every scan β€’ Scan history so you can track issues over time β€’ DIY repair guidance and YouTube repair video suggestions for your exact vehicle β€’ Ask AXEL follow-up questions about your specific car β€’ Works with older, pre-2008 (K-line) vehicles too β€’ The entire app in English or Spanish β€” including AXEL's AI diagnosis. Switch anytime. WHAT YOU NEED: A Bluetooth OBD2 adapter (ELM327-compatible, sold separately). It plugs into the OBD port under the dashboard on the driver's side β€” and on iPhone there's no pairing needed, the app finds it automatically. Works with most gas-powered cars and light trucks sold since 1996 (OBD2), including many pre-2008 K-line vehicles. Auto AI Diagnostics helps you understand your car and make informed decisions β€” it's information and guidance, not a substitute for a professional inspection when safety is on the line.

Screenshots

MotorBit OBD 24 screens
Auto AI Diagnostics4 screens

Verdict

The call

The clearest difference is in-app purchases: Auto AI Diagnostics at none against MotorBit OBD 2's 1. Auto AI Diagnostics also leads on update cadence (weekly vs every 3 months) and device support (3 vs 1). On price and ads there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. MotorBit OBD 2 sells 1 one-off in-app purchase. Auto AI Diagnostics asks for nothing beyond the download.

UpkeepUpdate frequency

MotorBit OBD 2 ships an update every 3 months, Auto AI Diagnostics weekly. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

Scorecard4 real differences Β· 2 level
MotorBit OBD 2 versus Auto AI Diagnostics: the parameters behind the verdict, then further details
ParameterMotorBit OBD 2Auto AI Diagnostics
PriceFreeFree
Update frequencyEvery 3 monthsWeekly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhoneiPhone, iPad, iPod β€” better
Requires iOS18.415.1 β€” better
Further details β€” not scored
Size17 MB84 MB
Age rating4+4+
DeveloperOguzcan OrucMatthew Sheaffer

In-app purchases

1 purchases

MotorBit OBD 2

One-time1
  • MotorBit Pro$5.99
None

Auto AI Diagnostics

No in-app purchases

Questions

Is MotorBit OBD 2 free?
MotorBit OBD 2 is free to download, with in-app purchases available.
Is Auto AI Diagnostics free?
Auto AI Diagnostics is free to download, with no in-app purchases.
Do MotorBit OBD 2 or Auto AI Diagnostics have ads?
Neither MotorBit OBD 2 nor Auto AI Diagnostics shows ads.
Which is updated more often, MotorBit OBD 2 or Auto AI Diagnostics?
MotorBit OBD 2 ships an update every 3 months, and Auto AI Diagnostics weekly. Most recently, MotorBit OBD 2 was updated on October 15, 2026 and Auto AI Diagnostics on October 12, 2026.

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