"クルマの家計簿" is an Android app that allows users to manage information related to car expenses, fuel efficiency, and maintenance history on their smartphones. By scanning the QR code on the vehicle registration document, users can easily register the car model information.

Furthermore, the recorded data can be stored in the cloud, ensuring smooth data migration in case of a lost or replaced smartphone.

Key Features of the App:

1) Comprehensive Coverage of Car Expenses

The app covers almost all car-related expense information, and the data can be easily managed through graphical representations. It aims to provide a complete solution for managing car-related information.

2) User-Centric Functionality

The app includes convenient features such as "cross-tabulation of data," "push notifications for recalls," and "shared expense calculator." It strives to meet the needs expressed in reviews of similar apps, such as "alert for oil change intervals," "clear and understandable fuel efficiency graphs," and "ability to share information among family members on their respective smartphones."