Chat with an AI that truly knows your car. Maintain it, diagnose it, understand it, and enjoy it more - for virtually any vehicle, on iOS and Android.
What it does
A suite of tools built around how real drivers use their vehicles - whether your car is running perfectly or you need answers fast.
Ask anything about your car in plain English. Kaiju Mechanic understands your vehicle's history, connected OBD-II data, and service records — so the answers are specific to your car, not generic advice from the internet. Free accounts include 15 AI chats per month.
Build a complete service history for every vehicle you own. Log oil changes, brake jobs, tire rotations, or any repair — with date, mileage, cost, and notes. The app tracks upcoming intervals and flags overdue maintenance so nothing slips through the cracks. Manual logging is free forever with unlimited records.
Point your camera at any service receipt, repair estimate, or maintenance sticker. AI vision reads it and files the details — shop, date, mileage, work performed, parts, cost — directly into your vehicle's service history. No manual entry.
Sometimes a picture is worth a thousand words. Photograph worn tires, rust, a leaking hose, or brake pad wear — and let AI vision identify the component, assess the severity, and tell you what to do next. No guessing. No jargon.
Pair any standard ELM327 Bluetooth OBD-II adapter (widely available for $20 to $50) and get a live dashboard of engine data: RPM, coolant temperature, intake airflow, throttle position, O2 sensor readings, and every active or pending fault code — all interpreted in plain English by the AI. Requires a 1996+ vehicle.
Add every car you own or care for. Each vehicle gets its own profile, service history, and AI context — so when you ask about your project car, the answers are specific to that car. Perfect for households, enthusiasts running a daily driver alongside a build, or anyone juggling more than one vehicle. Starter supports 2 vehicles. Plus is unlimited.
Simple by design
No training. No proprietary hardware. No appointment. Just download, add your vehicle, and start exploring.
Available free on the iOS App Store and Google Play. Start as a guest or create an account to sync across devices.
Pick your year, make, model, and trim from our curated database - or connect a Bluetooth OBD-II adapter to auto-detect your vehicle.
Ask anything - maintenance advice, symptom diagnosis, modification ideas, performance tips, or help understanding your live engine data.
See it in action
Maintenance
Dashboard
Live Data
How we compare
Free–$9.99/mo
$150–$300/visit
Free–$30
| Feature | Kaiju MechanicFree - $9.99/mo | Dealer Diagnostic | Generic OBD App |
|---|---|---|---|
| AI-Powered Diagnosis | |||
| Works on 1980+ vehicles (OBD-II: 1996+) | |||
| No proprietary hardware | |||
| Natural language chat | |||
| Document scanning | |||
| Photo analysis | |||
| Maintenance tracking | |||
| Multi-vehicle support | |||
| Cost | Free–$9.99/mo | $150–$300/visit | Free–$30 |
Simple pricing
No checkout on this site. Download the free app, then upgrade from inside the app via Apple App Store or Google Play if you want more.
Try Kaiju Mechanic risk-free.
Billed monthly
For daily drivers who want full coverage.
Billed monthly
Subscribe in-app after download
For enthusiasts and multi-vehicle households.
Billed monthly
Subscribe in-app after download
Premium plans managed through Apple App Store & Google Play. Cancel any time.
Ready?
Download Kaiju Mechanic free and get your first AI diagnosis in under a minute. No appointment. No hardware. Just answers.