Odograph: Car & Bike Fuel Log

Every fuel app tells you what you spent. Odograph tells you when your vehicle starts getting worse.

Log a fill-up and it works out your real mileage — then compares it with your own baseline. When four tanks in a row come in below it, Odograph says so, in plain numbers: "your last four tanks averaged 11% worse than your average." No other log does this, and it is the whole reason this one exists.

Any vehicle, not just cars
• Motorcycle, scooter, auto-rickshaw, car, SUV, van, truck, bus, boat — or anything else with a tank and an odometer
• Pick what it is and Odograph sets the units for you: a bike in km/L, a car in L/100km, a pickup in MPG
• Petrol, diesel, CNG, LPG or electric — CNG is measured in kilograms, the way the pump sells it
• Service intervals that match: 3,000 km oil on a motorcycle, 25,000 km on a truck, and no oil at all on an electric

Mileage that is actually correct
• Partial fills, missed fills and full-to-full — handled properly, not silently averaged away
• km/L, L/100km, MPG (UK), MPG (US), km/kWh and km/kg — your unit, per vehicle
• Cost per kilometre and cost per month, from what you really paid
• A tank that cannot be calculated is marked as such, with the reason, instead of quietly distorting your average
• A reading that cannot be right — 40 litres into a scooter, 5,000 km on one tank — is questioned before it is saved

A fill-up in seconds
• Odometer, litres, price — and the total works itself out, or type the total and the litres do
• Your last reading and the distance since are on screen while you type
• Photograph the receipt and it stays with the entry
• No account. No sign-up. Open the app at the pump and you are done

Service that follows the odometer, not just the calendar
• Tap "Engine oil" and the target is worked out from your own reading and your own daily distance
• Intervals by distance, by date, or whichever comes first
• A reminder that cannot be projected yet says so, rather than implying an alarm that will never arrive
• Every interval is yours to change. Odograph proposes; it never insists

Where the money actually goes
• Fuel, servicing, insurance, tax, tolls and parts, in one running total
• Cost per kilometre over any period
• Best, worst and cheapest tank

Your whole garage
• As many vehicles as you own, each with its own units and its own history
• Switch between them in one tap
• Arrange the bottom bar around the screens you actually use

Yours, and it stays yours
• Your log stays on your phone. Every fill-up, cost, note and receipt photo is stored in the app's own private storage — there is no account, no server, and nothing you record is ever uploaded
• The ads are the only thing that talks to the internet, and they never see your log. Ad software gets the device's advertising ID and the usual ad signals; it gets none of your entries
• Export the lot as a JSON backup file whenever you want, and restore it on any phone

Odograph keeps records and counts distances. It does not tell you your vehicle is safe, does not diagnose a fault, and does not decide when a service is due — always follow your manufacturer's schedule and a qualified mechanic.

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