Check Engine Chat vs OBD Pilot
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Check Engine Chat
Read full descriptionHide full description
Your AI mechanic, running entirely on your phone. Ask any car question and get instant, accurate answers grounded in a curated automotive database covering 400+ vehicle models from 1976 to 2025. Oil specs, torque values, tire pressure, transmission fluid, spark plug gaps, DIY repair guides with tool lists and difficulty ratings, and symptom-based diagnostic troubleshooting. AUDIO DIAGNOSTICS (Pro) Record your engine sound. The AI analyzes the audio and identifies the problem such as knock, turbo failure, belt squeal, timing chain wear, transmission whine, VTEC rattle, and more. All processed on-device in seconds. PRIVACY FIRST Everything runs on your iPhone. No cloud servers. No accounts. No analytics. No tracking. Works in airplane mode. Your car problems are yours. FEATURES - Vehicle spec lookup (oil, torque, tire pressure, fluids) - DIY repair guides with tool lists and difficulty ratings - Symptom based diagnostic reasoning - Audio engine sound diagnosis - Aftermarket and mod guidance - Conversation history + Generate Report - Works fully offline after setup Requires iPhone with at least 6gb ram. Built by car enthusiasts.
OBD Pilot
Read full descriptionHide 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 ā 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
Verdict
The clearest difference is update cadence: OBD Pilot at weekly against Check Engine Chat's monthly. OBD Pilot also leads on iOS requirement (17.0 vs 26.2). On price, ads, in-app purchases and device support 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
Both are free to download. Check Engine Chat sells 1 one-off in-app purchase and OBD Pilot sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Check Engine Chat ships an update monthly, OBD Pilot weekly. Both last shipped on October 14, 2026.
| Parameter | Check Engine Chat | OBD Pilot |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Weekly ā better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad ā better | iPhone |
| Requires iOS | 26.2 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 2.7 GB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Yao Vah Saechao | Shasank Mallela |
In-app purchases
Check Engine Chat
- Audio Diagnostics Pro$4.99
OBD Pilot
- OBD Pilot Pro Monthly7 Days trial$4.991 Month
- OBD Pilot Pro Annual7 Days trial$39.991 Year
Questions
Is Check Engine Chat free?
Is OBD Pilot free?
Do Check Engine Chat or OBD Pilot have ads?
Which is updated more often, Check Engine Chat or OBD Pilot?
Other comparisons















