TRUE OBD turns any ELM327 adapter into a premium diagnostics companion — real-time engine telemetry, AI-powered fault diagnosis, freeze-frame insight, performance tests, and drive analytics with a chart for every reading your car answered. On your phone, your watch and your car's screen.
From live sensor streams to the whole history of a car, TRUE OBD surfaces the clearest picture your vehicle can give — and leaves the decisions to you.
Real-time RPM, temperatures, fuel, pressures and dozens of sensors — only the parameters your vehicle actually supports, never faked.
Read stored, pending and permanent trouble codes, with what each one means, how serious it is and what commonly causes it. Clearing is gated behind real safety checks and a before-and-after reading — never a blind reset.
See the exact engine conditions your car captured at the moment a code set — speed, load, temperature, fuel trims — with an optional plain-language reading of what they point to.
Measure 0–100, quarter-mile and braking distance with GPS + live engine data. Safety-gated, with honest accuracy disclaimers.
Automatic trip tracking with route, fuel economy, safety score and CO₂ — and a weekly summary of how the driving actually went.
Service schedules, odometer tracking, insurance and licence reminders — so nothing important slips past you.
Each drive keeps the readings your car actually answered — engine speed, load, temperatures, fuel trims and more — drawn against the clock, with the gaps shown as gaps rather than smoothed away.
Send a drive's full telemetry to your own AI assistant — ChatGPT, Gemini, Claude or DeepSeek — and ask what the readings mean. The app prepares the figures, the fault codes and the gaps; the conversation is yours, on your subscription.
Fuel, servicing and expenses per car, cost per kilometre, and quarterly PDF reports you can share — in your own currency.
A Wear OS companion, a car-screen experience for Android Auto, and home-screen widgets for your next service, your last drive and your running costs.
Every screen — and every explanation of what a sensor reading means — translated by hand, not by machine.
Plug in, connect, and let TRUE OBD do the heavy lifting.
Connect any standard ELM327 Bluetooth OBD-II adapter to your car's port. TRUE OBD pairs and auto-connects whenever you drive.
Run a full-spectrum fault scan, watch live data, or just drive — trips, telemetry and early warnings are captured automatically.
Understand what your car is telling you in plain language — the codes, the conditions behind them, and the trends across your drives — then decide what to do, with a mechanic when it matters.
Setup, drives, live data, fault codes, emissions readiness, servicing, costs and privacy — every question the app can answer, in plain English, in one place.
Download PDF35 pages · A4 · updated October 2026
TRUE OBD is local-first. Your drives, diagnostics and vehicle profiles are created and stored on your device. TRUE OBD does not maintain a server-side diagnostic archive; optional cloud actions process only the bounded data disclosed in the privacy policy.
TRUE OBD is on Google Play. Install it free, plug in any ELM327 adapter, and your next drive records itself.
Android 8.0 or newer. A Bluetooth OBD-II adapter is needed for engine data; drives can be recorded without one.
Found a bug, have a feature idea, or a question about a diagnostic result? Send us a message and we'll get back to you.
✉️ densmac06@gmail.com