CarOtter

Chat with an AI that knows your car. Decode trouble codes, check smog readiness, and track fuel and service. Private by design, right on your iPhone.

Check engine light on? Don't pay $150 for a diagnosis. CarOtter turns any $20 Bluetooth OBD-II adapter into a car health companion that explains what's wrong in plain English.

SCAN AND UNDERSTAND • Read check-engine codes and get real answers, not jargon • Watch your engine's vitals live: RPM, coolant temp, fuel level, battery, and more • Every drive is saved, so you can spot trends before they become repairs

PASS YOUR SMOG CHECK THE FIRST TIME • A failed test costs you the fee, the retest, and a day of your life • CarOtter shows all 8 readiness monitors at a glance, so you know you're ready before you pay

ASK OTTER ANYTHING • Chat about any code, symptom, or maintenance question • Otter knows your car: your codes, your history, your trends. Generic chatbots don't • Runs privately on your iPhone by default with Apple Intelligence, or bring your own key for OpenAI, Gemini, Claude, or Grok • Optional web search finds current recalls, prices, and part info • Works in CarPlay with voice

REMEMBER EVERYTHING • Fuel log with real MPG trends from your actual fill-ups • Service history with receipt scanning, so every repair is one search away • Multiple cars, each kept completely separate

PRIVATE BY DESIGN • No accounts on our servers, no analytics, no ads • Everything stays encrypted on your device • Your mechanic works for you. So does your data

Grab an ELM327-compatible Bluetooth adapter (about $20 online), plug it in, and meet your car. Fuel, service, chat, and smog history all work even without one.