Know what your car is telling you.
Live dials, sat-nav that knows the limit, a dashcam, and an AI mechanic who explains your fault codes in plain English.
It runs on the cheap plug you may already have in a drawer.
Free. No subscription. Try it with no car in demo mode.
The app's home screen, in the colour you pick.
In testing now. Want in?
- Join the tester group with your phone's Google account.
- Then tap the opt-in link. It only works once you're in the group.
- Install OBD Mechanic from the Play page it opens.
Android only. Demo mode works with no car and no adapter, and the mechanic's three example answers inside it are free.
Three codes. One cause.
He reads your fault codes, your live readings and your exact car together. Then he tells you what to check, cheapest first, and whether it is safe to drive.
Your first look at your own car is free.
See how the mechanic works ›
A real diagnosis screen.
A dash worth showing off.
Full-screen skins, or build your own from a gallery of dial styles. Every dial shows your car's real numbers as you drive.
See the skins and dials ›
Day Rider: the 80s called, they're proud of you. Prestige, for the tastefully restrained.
Turn it sideways.
Map, speed limit and music on one screen. Camera warnings come earlier the faster you go.
Or lay the phone flat and read the speed off the windscreen.
See the map and the HUD ›
Drive mode, music on the right. The HUD: 73 in a 60. The arc doesn't approve.
Your lap, on video.
The dashcam films the road and logs your readings beside it. It spots laps by itself.
Export a lap with your dials, a track map and a lap timer on it, ready for the group chat.
See the dashcam ›
A real lap export. The camera mount was a bit high.
Start from your number plate.
Type the reg. Make, model, MOT and tax dates fill in.
The full MOT history comes too, every advisory colour-coded. Free.
See the garage ›
The developer's Mazda. It has seen things.
Put it on the big screen too.
Your phone keeps the adapter. A cheap head unit or a spare tablet shows your dials over WiFi.
Set it up once and it reconnects by itself.
See second screens ›
A real dash wearing three of them.
Also in the app
The small things that matter on the day.
Every drive recorded
Graphs of every drive. Tap Mark it the moment the fault comes back.
Warning lights it adds
Overheating, charging trouble, oil too hot. A chime only when it is real.
Breakdown numbers
The AA, Green Flag and RAC, there with no signal.
Buyer mode
Check a car's MOT history and read its codes before you buy it.
0 to 60 timer
Quarter-mile, braking and a g-force ball too. No extra kit.
Colour-blind mode
One switch swaps every warning colour for a red-green safe set.
Free to use. Pay only when you ask the mechanic.
No subscription. Spanners never expire.
Live dials, reading and clearing codes, drive logs, maps and speed limits, the garage and MOT history, demo mode.
A quick look costs 1 spanner. A deep look costs 3. Your first look is free.
Every skin, extra dashboards, the full dial collection, full HUD options and your own colours. No renewals. It stays yours.
One good look and one fix. Not a subscription drip.
Need an adapter?
Petrol cars since 2001 and diesels since about 2004 have the port. Any ELM327 plug works, so the one in your drawer will do. If you need one, these are the three we plan to stock.
The basic one
Does the job. Slower to answer and may miss some readings. A cheap spare for the glovebox.
The one we'd pick
A known brand. Answers faster, holds a steadier link and reads more of what your car offers.
The specialist
Switches to the second network Fords and Mazdas hide some readings on. It's the one on the developer's Mazda most days. Most people do not need it.
You do not need ours. Install first. Demo mode shows you everything before you spend a penny on a plug.
Find out what that light means.
Join the test today. Free, straight from Google Play.
