Welcome to OBD Tally

OBD Tally is a customisable OBD-II dashboard, vehicle data logger, and diagnostic companion for iPhone and CarPlay.

The app began as a personal project for monitoring a Ford Everest V6 and is shared for other vehicle owners and enthusiasts who may find it useful. It is not professional workshop software, a certified diagnostic product, or a substitute for qualified mechanical advice.

OBD Tally was developed for and tested with the Veepeak OBDCheck BLE+ adapter. Other ELM327-compatible Bluetooth Low Energy adapters may work, but compatibility cannot be guaranteed. Wi-Fi and classic Bluetooth OBD adapters are not supported.

Safety: Set up the app, dashboards, alerts, and recording before driving. Do not interact with your phone or attempt diagnostic work while operating a vehicle.

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1. What You Need

To use OBD Tally, you need:

• An iPhone with Bluetooth enabled.
• A compatible Bluetooth Low Energy OBD-II adapter.
• A vehicle with an OBD-II port.
• The vehicle ignition switched on or the engine running.
• Bluetooth, notification, and location permissions where applicable.

The OBD-II port is usually located underneath the dashboard near the steering column.

Recommended adapter

OBD Tally was designed and tested with the Veepeak OBDCheck BLE+.

Other ELM327-compatible BLE scanners may work, but adapter quality and command support vary considerably. Low-quality ELM327 clones may connect successfully while producing slow, incomplete, or incorrect results.

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2. First-Time Setup

1. Plug the OBD adapter firmly into your vehicle’s OBD-II port.