Coradine Aviation Systems ( has launched LogTen Pro, the third major update this year for its pilot logbook software for iPhone, iPad, and Mac. 

The new version, LogTen Pro Dakota, introduces a new logbook calendar view, new contextual menus for instant access to the tools most used by pilots, and the ability for long-haul/multi-crew pilots to instantly calculate and update their logbook for relief time. The app is free, but does offer in-app purchases.