ChatOBD
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Open beta for iPhone

Understand your car. Know what to do next.

An iPhone assistant for warning lights, unfamiliar sounds, and repair quotes, with answers in plain language.

We recommend a compatible iPhone Bluetooth OBD-II adapter for direct vehicle readings.

ChatOBD on iPhone 15 Pro Max, showing a 2020 Volkswagen Tiguan’s vehicle details, health, codes, and recalls

AI specialists for your car

Better answers start with
your car's data.

The adapter gives ChatOBD's AI specialists readings from your car
to use alongside the symptoms you describe.

Compact Bluetooth OBD-II concept adapter with a friendly amber LED pixel face and a graphite body
  • Diagnostics agent01

    Assess the warning.

    Consider the code alongside the symptoms you've noticed.

  • Live data agent02

    Explain a change.

    Explore why a sensor reading rises or falls.

  • Car agent03

    Use the car's history.

    Include earlier scans and vehicle details in the answer.

  • Repair advisor04

    Prepare for the shop.

    Break down a quote and work out what to ask before agreeing.

Concept adapter shown. Check iPhone compatibility when choosing yours.

How it works

From warning light to next step.

  1. Plug in. Connect a compatible Bluetooth OBD-II adapter to your car's diagnostic port, then pair it with ChatOBD on your iPhone.

    ChatOBD home screen for a Volkswagen Tiguan, connected, with shortcuts to scan codes, review a drive, check a warning light, see live stats, and ask anything

  2. Your car. Health, stored codes, and open recalls for the car you drive, together on one card.

    Vehicle card for a 2020 Volkswagen Tiguan showing a health score of 100, no stored codes, and 3 recalls to review

  3. The scan. When a warning light comes on, scan for trouble codes and see what each one means and how closely to look at it.

  4. The question. Ask whether it's safe to keep driving, by voice or text, and follow up without starting over.

  5. Show it. Add a dashboard photo or record the sound of a rough idle, details a scan can't capture.

  6. The drive. After you park, review the trip: the route, moving time, and a driver score with what affected it.

    Drive summary with the route, a driver score of 86, one hard-braking event, and 11 miles driven

  7. Before the shop. Return to past scans, drives, and conversations, and know what to ask about a repair quote.

Questions drivers ask

See how ChatOBD answers.

Choose an example below.

Choose a question to read ChatOBD’s example answer
You 2017 Honda Civic

My check engine light just came on. Is it safe to keep driving?

ChatOBD

Flashing? Stop driving.

Pull over safely and switch off the engine. If the light is steady, scan the code to find out what needs attention.

You 2015 Ford F-150

What does P0420 actually mean, and how urgent is it?

ChatOBD

Check the cause before replacing parts.

P0420 flags an emissions issue. Book a diagnosis before paying for a new catalytic converter.

You 2019 Volkswagen Tiguan

The shop quoted me $900 for a misfire. Is that reasonable?

ChatOBD

Ask what the $900 covers.

Get an itemized quote with the diagnosed fault, parts, and labor. A misfire code alone doesn’t explain the price.

You 2014 BMW 328i

Why is my coolant temperature climbing in traffic?

ChatOBD

Start with the coolant and fan.

Have both checked. If you see an overheating warning, pull over safely and switch off the engine.

ChatOBD Assistant

Show it. Describe it. Ask about it.

Join testingOpen beta · iPhone

Speak naturally

Ask by voice and follow up without starting over.

Send a photo. Record the sound.

Add details a scan can't capture, such as a dashboard photo or the sound of a rough idle.

You
Dashboard photo showing the instrument cluster and steering wheelDashboard photoEngine at idle0:08OBD scanP0301

This light came on and the engine sounds rough.

ChatOBDYour scan shows P0301. Is the check-engine light steady or flashing?
  • Diagnostics
  • Live data
  • Vehicle history
  • Repair advice

FAQ

Good questions.

How does ChatOBD use my data?

AI requests send your messages, attachments, and relevant vehicle context to our AI providers. Trip sync is optional and server-readable; Glovebox sync contents are end-to-end encrypted. You can manage permissions and optional product analytics in Settings. Our privacy policy explains the details and deletion options. Read the privacy policy.

Do I need extra hardware?

We recommend a compatible iPhone Bluetooth OBD-II adapter so ChatOBD can read data directly from your car. Questions, photos, and recordings still work without one.

Which cars are supported?

Your car needs an OBD-II port for a direct connection. Available trouble codes and sensor readings vary by vehicle and adapter.

Is the beta free?

Yes. The iPhone beta is free through TestFlight.

Is ChatOBD available for Android?

Not yet. The beta is iPhone only.

Early access for iPhone

The ChatOBD beta is open.

Install the current beta through TestFlight and help shape what comes next.

Join testingHow it works