Gas Log

Gas Log is the simple way to track fuel costs, fuel economy, and everything else your vehicles cost you. Gas, diesel, or electric, miles or kilometers: log a fill-up or charge in seconds and let the app handle the math.

**Track unlimited vehicles.**
Add as many vehicles as you need — each with its own photo, color (pick a preset or any custom color by hex code), VIN, and full history so you can tell them apart at a glance.

**Automatic fuel economy and cost calculations.**
Enter your odometer reading, how much you filled up, and the total cost — Gas Log instantly calculates your fuel economy, cost per gallon (or liter, or kWh), and cost per mile. No spreadsheets, no manual math.

**Your units, per vehicle.**
Each vehicle picks its own units: miles or kilometers, and gallons, liters, or kWh. See MPG, km/L, L/100km, mi/kWh, or kWh/100km, whichever you actually use. Set your default once in Settings.

**Built for EVs too.**
Log home and public charging in kWh, track cost per kWh, and follow your efficiency over time. The gas car and the EV can live in the same garage.

**A real Stats dashboard.**
See your fuel economy trend over time, a full cost breakdown, and exactly where your money goes by category.

**Any date range, on every tab.**
Pick the last 3, 6, or 12 months, year to date, all time, or any calendar year. Stats, fill-ups, and expenses all follow the same range, so years of history never mean years of scrolling.

**Track expenses beyond fuel.**
Maintenance, insurance, registration, tolls, parking — log it all, grouped by month with a total for each, and see it broken down alongside your fuel costs.

**Fuel economy you can trust.**
Partial fill-up? Gas Log counts that fuel toward your next full tank, the same full-to-full method serious trackers use. Forgot to log one? Mark the next fill-up as "missed previous" and it stays out of your averages instead of skewing them.

**Switching from another app? Bring your history.**
Import a CSV from your old fuel tracker. Gas Log matches the columns, reads the dates, and flags rows that look like typos (a misplaced odometer reading, a $2,000 tank of gas) so you can review them before anything is saved.

**Export anytime.**
Export everything, or just one vehicle, as a CSV right from Settings.

**Easy to read.**
Gas Log follows your phone's text size, so larger text just works.

**Your data stays on your device.**
No account required. No data collection. No ads. Gas Log is completely private — everything is stored locally on your device.

**Made for everyday drivers.**
Whether you're tracking one car or managing costs across a small fleet, Gas Log keeps it simple.

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Download Gas Log and start tracking every mile and every dollar.

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