Comparison

Auto AI Diagnostics vs OBD Pilot

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

Head to head
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 — your AI shop foreman — 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: • Real fault codes pulled straight from your car's computer — engine and control modules • Automatic VIN read directly from your vehicle's ECU • AI-powered diagnosis with evidence and an action plan — not just a code definition • Fault code descriptions verified against the web for accuracy • View Conditions: see the mileage, battery voltage, and speed recorded when each fault set • Live engine data — RPM, coolant temp, battery voltage, throttle, and more • Odometer tracking with every scan • Scan history so you can track issues over time • DIY repair guidance and YouTube repair video suggestions for your exact vehicle • Ask AXEL follow-up questions about your specific car • Works with older, pre-2008 (K-line) vehicles too • The entire app in English or Spanish — 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 — 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 — it's information and guidance, not a substitute for a professional inspection when safety is on the line.

About

OBD Pilot

Features
Read full description

Your car has been trying to tell you something. OBD Pilot reads the codes and explains them in language you actually understand. Plug any ELM327 adapter into your car's OBD2 port (every vehicle made after 1996 has one), connect via Bluetooth or WiFi, and OBD Pilot does the rest: WHAT IT DOES • Reads confirmed and pending trouble codes from every control unit • Shows you live engine RPM, speed, coolant temperature, fuel level, and more • Translates cryptic codes like "P0420" into plain English with real next steps • Captures the engine state at the moment a fault was stored (freeze frame) • Auto-saves every scan as a shareable PDF report CHAT WITH YOUR CAR Ask anything in everyday language. "Is it safe to drive?" "What does P0420 mean?" "Why is the engine running hot?" OBD Pilot's AI assistant uses your real diagnostic data to give specific, practical answers — and you can send photos of dashboard lights or engine parts for visual analysis. NO HARDWARE? START WITH DEMO MODE Toggle Demo Mode in Settings to explore every feature against a simulated vehicle. Realistic codes, real-feeling live data, the works. COMPATIBLE WITH • Any car or truck made after 1996 (US) / 1998 (EU) • Standard ELM327 Bluetooth or WiFi OBD2 adapters • Generic adapters like "OBDII", "Veepeak", "Vgate iCar" OBD PILOT PRO Free: unlimited diagnostic scans, live data, code lookup, PDF reports Pro ($4.99/mo with a 1-week free trial, or $39.99/year): unlimited AI chat and detailed AI analysis SAFETY FIRST OBD Pilot is an informational tool, not a substitute for a qualified mechanic. Always confirm any finding with a professional before performing a repair. Never read or interact with the app while driving. PRIVACY No accounts, no analytics, no tracking. Your scan history stays on your device. AI requests are sent to OpenAI for processing; we do not log them on our backend. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://obdpilot.com/privacy.html

Screenshots

Auto AI Diagnostics4 screens
OBD Pilot4 screens

Verdict

The call

The clearest difference is in-app purchases: Auto AI Diagnostics at none against OBD Pilot's 2. Auto AI Diagnostics also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

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

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

Both are free to download. OBD Pilot sells 2 in-app purchases, starting at $4.99 per month. Auto AI Diagnostics asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Auto AI Diagnostics versus OBD Pilot: the parameters behind the verdict, then further details
ParameterAuto AI DiagnosticsOBD Pilot
PriceFreeFree
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size84 MB7 MB
Age rating4+4+
DeveloperMatthew SheafferShasank Mallela

In-app purchases

None

Auto AI Diagnostics

No in-app purchases

2 purchases

OBD Pilot

Subscriptions2
  • OBD Pilot Pro Monthly7 Days trial$4.991 Month
  • OBD Pilot Pro Annual7 Days trial$39.991 Year

Questions

Is Auto AI Diagnostics free?
Auto AI Diagnostics is free to download, with no in-app purchases.
Is OBD Pilot free?
OBD Pilot is free to download, with in-app purchases available.
Do Auto AI Diagnostics or OBD Pilot have ads?
Neither Auto AI Diagnostics nor OBD Pilot shows ads.
Which is updated more often, Auto AI Diagnostics or OBD Pilot?
Auto AI Diagnostics ships an update weekly, and OBD Pilot weekly. Most recently, Auto AI Diagnostics was updated on November 5, 2026 and OBD Pilot on October 31, 2026.

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