Every fill-up,
in your pocket.

Nowhere. PocketFuel keeps your vehicles, fill-ups and expenses on your phone. The only thing it ever sends over the network is the optional check for a newer version on GitHub. Nothing about your vehicles, mileage or spending leaves your phone.

No. There is no account, no sign-up and no server to connect to. Install it, add a vehicle and start logging.

Tank to tank. A full fill-up with a mileage reading is a starting point. The next full fill-up with a mileage reading gets its MPG from the miles driven since then divided by all the gallons added since then, including any partial fill-ups in between. The overall average is total distance over total gallons, not an average of individual MPG figures, so one small top-up cannot skew it. MPG is always worked out over a vehicle’s whole history first and only then narrowed to the period you are viewing.

MPG needs something to measure against. The first full fill-up with a mileage reading becomes the starting point, so MPG first appears once you have logged two full fill-ups with mileage. If a mileage reading does not go up from the previous one, that entry gets no MPG and becomes the new starting point.

Mark the entry as a partial fill-up. It gets no MPG of its own, but its gallons and cost still count toward the next full fill-up.

Any three of the four numbers: mileage, total cost, price per gallon and gallons. With a mileage reading, you only need two of cost, price and gallons, and the third is calculated for you. Without mileage, enter all three of cost, price and gallons, and the entry is saved without an MPG.

No. PocketFuel works in miles, gallons, MPG and US dollars, and there is no unit setting.

Yes. Add as many vehicles as you like and switch between them from the top bar. Removing a vehicle also removes its fill-ups and expenses, after a confirmation.

Yes. In Settings you can add, rename and reorder categories. Built-in categories can be hidden by deleting them, and Other always stays. Deleting a custom category moves its expenses to Other.

The widget has no timer. The app redraws it whenever something it shows changes: saving a fill-up or expense, editing or removing a vehicle, changing widget settings or the language, or restoring a backup. Each widget shows the vehicle you picked when you placed it, and its figures cover all time.

Pick a folder with Android’s own folder picker, then back up manually or on a daily, weekly or monthly schedule. Restoring adds a backup file’s vehicles, fill-ups and expenses to what is already on the phone. Nothing you already have is removed or overwritten, and restoring the same file twice adds nothing new. App settings in the file replace the current ones.

Yes, PocketFuel is currently free.

No, PocketFuel is currently not open source, but may be in the future.

PocketFuel requires Android 8.0 (Oreo) or newer.

No. PocketFuel is Android only, and iPhone is not supported.

PocketFuel development uses AI responsibly. Please see the full AI disclosure at the bottom of this page.

PocketFuel is made available to all, free, the same way its sibling apps are.

Developer accounts for the Google Play Store cost money and this app is free. If I released it in the Play Store, I would have to charge for the app to make back that money, which I do not want to do.

Yes. Please email me (admin) to collaborate. This domain name is the second part of the address.

If the app becomes open source, I will release it to F-Droid.

PocketFuel only communicates with GitHub. Once every 12 hours, or if you hit the check now button, PocketFuel checks the release versions to see if an update is available. Your data is not sent to GitHub, rather it pulls the latest version number and compares it locally to the installed version.

PocketFuel asks only for what it needs to run its optional features:

• Internet. Used only for the optional check for a newer version on GitHub. Nothing about your vehicles or spending is sent.
• Network state. Standard permission from the Android library PocketFuel uses for scheduled tasks, so a background task can check the phone’s connection.
• Biometrics. Only used if you turn on biometric unlock in Settings, which is off by default. Android checks your fingerprint or face, and PocketFuel never sees it.
• Startup and wake. Standard permissions from the same library. They let automatic backups resume after a restart, and keep the phone awake briefly while a backup runs.

PocketFuel does not request location, contacts, camera, microphone, notifications, or access to your files. Backups are saved to a folder you pick with Android’s own folder picker.