Refueling Database is a free Android app developed by Harnisch Ges.m.b.H. that helps users keep track of their vehicle refuelings and calculate fuel consumption. With this app, users can record refuelings with costs, backup and restore their records to/from SD card, server, or storage, export data to CSV for spreadsheet import, and import data from CSV after spreadsheet export.

The app supports multiple vehicles, metric, imperial, and US system of units, and multiple currencies. It also allows users to create monthly statements and keep track of all other expenses such as maintenance, insurance, and toll.

For users in the USA, Canada, Germany, Austria, France, Italy, Portugal, and Spain, Refueling Database can also find the cheapest gas stations near them and help them save money. The app requires permission for GPS to use this feature. Users can navigate to the nearest gas stations and take advantage of the feature to find the best deals on fuel.

Refueling Database is very easy to use and has a print and create PDF feature that requires Android 4.4. The app also requires permission for billing for versions without ads. Overall, Refueling Database is a great app for anyone who wants to keep track of their fuel consumption and save money on gas.