The car tells you what is about to break, months before the light.

Baseline reads your car through a Bluetooth OBD-II adapter, keeps a record of every drive, and watches the margins in the car's own tests, so a part that is wearing shows long before its warning light. It reads only: it never writes to the car and never clears a code.

What it does

• Every drive, kept. Plug the adapter in once. Baseline connects on its own when the car wakes up and records the drive, even with the phone in your pocket.
• Margins, not just codes. The catalyst's own test, the oxygen sensor, fuel trim, warm-up, the 12 V battery and per-cylinder misfires, each measured against this car's own baseline.
• Evidence you can hand over. Pending codes and freeze frames vanish on the next clean drive. Baseline keeps them and exports a packet: PDF, CSV and the raw records.
• Private by design. No account, no server, no tracking. Everything stays on your iPhone unless you export it.

Trend and crossing estimates are beta. Baseline is not a substitute for a professional diagnosis.

More

• Support: which cars and adapters, pairing, contact.
• Privacy policy
• Terms of use