Logbook is a free Android app developed by Simplaapliko, available in the Business and Productivity category under Finance subcategory. The app is an easy and convenient tool for tracking and analyzing gas and service expenses. It is ad-free and allows you to track multiple vehicles with independent settings for each vehicle.

One of the key features of Logbook is the ability to calculate fuel consumption, which helps users to monitor fuel efficiency and make informed decisions about their vehicles. The app also allows users to monitor upcoming events and analyze their expenses using various charts. With regular updates, the app continues to add new features and improve user experience.

The app requires permission to modify or delete the contents of your USB storage, which is necessary for backing up data to your device storage or SD card. Overall, Logbook is a useful app for anyone who wants to keep track of their gas and service expenses and monitor their vehicle's performance.