Car Logbook & Fault Codes
No dongle. No account. Works fully offline. No ads, ever. Type or photograph a fault code and Watabook explains it in plain words — plus a full service logbook, reminders, and 36 dashboard warning-light meanings.
Free — one vehicle, unlimited log entries, the full offline fault-code dictionary. Pro adds the rest, 7-day trial.
A misfire on cylinder 1 was detected. Common causes: a worn spark plug, a faulty ignition coil, or a vacuum leak.
36 dashboard symbols explained — red, amber, green and blue, with what each one means and what to do. Type or photograph an OBD-II fault code for a plain-language explanation, a “can I keep driving?” verdict, likely causes and a rough cost range. The offline dictionary and every symbol work with zero signal.
Oil change, filters, brake fluid, tyres, timing belt, insurance renewal, technical inspection — remind by date, by mileage, or whichever comes first. Recurring reminders roll forward the moment you mark them done.
Every service, fuel fill-up, expense and note — with the odometer, cost and photos. Fuel economy and cost-per-kilometre worked out for you, so you always know what your car really costs — this year, and over its life.
Registration, insurance and receipts, encrypted on your phone. Export everything as CSV any time — your data is never locked in.
Prices shown in EUR · your store shows local pricing · cancel anytime.
AI explanations are general information, not a diagnosis — always have a safety-critical fault checked by a professional.