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Tankbook: Fuel Log & MPG icon

Tankbook: Fuel Log & MPG

Collet Auto & Vehicles Contains ads

No login, ever. Log gas in 10 seconds, get honest MPG for unlimited vehicles.

Price
Free
No in-app purchases
Updated
Oct 8
2026 · v1.0.1
Get it onGoogle Play See alternatives

Screenshots

  • Tankbook: Fuel Log & MPG screenshot 1
  • Tankbook: Fuel Log & MPG screenshot 2
  • Tankbook: Fuel Log & MPG screenshot 3
  • Tankbook: Fuel Log & MPG screenshot 4
  • Tankbook: Fuel Log & MPG screenshot 5

About Tankbook: Fuel Log & MPG

Log a fill-up in 10 seconds. No account, no login, no limit on vehicles.

Tankbook is a simple fuel log and gas mileage tracker. Enter the odometer and any two of price, amount or total — the third is calculated for you. Your MPG (or km/L, or L/100km) is worked out only between full tanks, so partial fill-ups and a missed fill-up don't wreck your numbers.

WHY TANKBOOK
• No sign-up. Open the app and start logging. Nothing to log in to, ever.
• Unlimited vehicles. Car, bike, the weekend car — all free.
• Honest fuel economy. Full/partial toggle and a "missed a fill-up" checkbox keep the average accurate.
• Any two of price, amount and total — the third fills itself in.
• Your units per vehicle: miles or km, gallons (US/UK) or liters, MPG, km/L or L/100km.

SEE WHERE THE MONEY GOES
• Home: average fuel economy, last tank, fuel cost per mile and fuel spent this month.
• Log: every fill-up and car cost by month — parking, tolls, car wash, service, insurance.
• Stats: fuel economy trend, monthly fuel spend, distance, fuel used and lifetime car costs.

YOUR DATA STAYS YOURS
• Everything is stored on your phone. No server, no account.
• Export to CSV and open it in any spreadsheet. Import CSV to move to a new phone.
• Undo when you delete something by mistake.

LITTLE THINGS
• Home screen widget with your last MPG and a one-tap "+ Fill-up".
• Optional fill-up reminder N days after your last tank, with quiet hours.
• Light and dark theme.

Tankbook is a gas log, mileage log and car expense tracker in one — built for people who want the numbers, not the jargon.

What’s new

Version 1.0.1 · Updated October 8, 2026

Deleting an entry no longer shows a pop-up message.

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