Getting started

Ready in three steps

From plugging in the adapter to the AI's first analysis: what you need and what to do, in order.

OBD Log is in Beta and not on Google Play yet. To install it, download the app from the Beta page.

Before you start

What you need

Three things: the phone, an adapter and the car.

Android 8.0 or later.

Bluetooth or Wi-Fi. Prefer a reference one: the ones sold on the market may or may not be able to read the data of certain vehicles.

Any make and model. Or a supported standalone ECU, such as Speeduino and MegaSquirt.

Step 1

Fit it into the car's connector and pair it with the phone.

The OBD2 connector is usually under the dashboard, near the pedals.
Turn the ignition on, so the car's computer responds.
Bluetooth adapter: pair it in the phone's settings. Wi-Fi adapter: connect the phone to its network.

Step 2

Create the account, add the vehicle and tap “Start sending”.

The app finds the car's protocol by itself and remembers it for next time.
The screen can turn off: sending continues.
Without internet, readings stay on the phone and upload when the connection is back.

Step 3

On the AI tab, connect the one you use and ask for an analysis.

Works with Claude, Cursor, VS Code and Gemini, over the open MCP protocol.
Generate the access in the app and connect. There are one-tap install links.
Example request: “Follow the car live for 2 minutes and tell me if anything is wrong.”

With the first reading done, see what else the app does with your car's data.

Heads up: the analysis is a help, not a final diagnosis. Suspect something is wrong with the car? See a mechanic.

OBD Log is in Beta. Download the app and try it before everyone else.