CarDiary is a free Android app developed by Georgi Genov that helps you manage your vehicle and track your expenses. Its features include a detailed history of your car events, fueling control, and full control over your fees, charges, and repairs.

With CarDiary, you can easily keep track of your vehicle's expenses and services, and add reminders to your Google calendar to get notified about important events related to your vehicle. You can also add notes related to your repairs, refuels, and taxes. The app supports multiple vehicles with the pro version, and you can choose between different odometer units: km or mile.

CarDiary has a fueling control feature that lets you keep track of your car's spending for the last week, month, or year. You can also calculate the cost of your vehicle tax with the vehicle tax calculator, and generate a PDF report of your car history. The app has a fully responsive design, suitable for both mobile devices and tablets and laptops.

In conclusion, CarDiary is a great app for anyone who wants to keep track of their car's expenses and services. Its automatic calculation of average fuel consumption and detailed car events history make it an excellent choice for those who want to stay on top of their vehicle's maintenance.