Purchase price for app gives user 21 days of usage before requiring a subscription. You can extend use of a diary by purchasing additional subscriptions for 3, 6 or 12 months. This popular app on iOS devices is now available for Android users. Logbook Checker is an application for Australian truck drivers which allow them to check their Driver Work Diary to make sure it complies with legal requirements. It checks log entries for drivers using Standard Hours (solo and two-up), BFM (solo and two-up) and WA (solo and two-up). It will also tell you when you can drive next and how long you can drive for before your next break is due. And when you fill in your New Driver Work Diary it will show you how to fill it in correctly.