A comprehensive timetable of all routes was published on 2 April 2023. Since then, some changes have been made on a number of routes. Transport for Cornwall has now published an updated timetable book for all of Cornwall. This is available in hard copy from various locations such as bus stations and tourist information bureaux. It is available as a large pdf file via a link from the Transport for Cornwall website. The link to the Bus Times Guide Book on that website has been updated from the 2 April version to the revised 28 May version.
Alternatively, it can be downloaded from here: 28 May timetable. Or individual routes can be downloaded from the Timetables page of this website.