Go to the Contacts screen, top menu option Administration -> Personal settings -> Synchronization and enable the sync of your contacts and calendar. For both, SpinOffice creates a DAV-account. DAV is an Internet standard / protocol designed to allow users to access and share contact data and calendars on a server.

The steps how to activate the DAV sync accounts are instantly sent to you by email once the options are enabled.

All contacts and the calendar in SpinOffice can be in sync with your Apple (Mac & iOS) or Android devices. The contacts will be added as group to the Contacts app of your device, the calendar will be added as separate calendar in the default Calendar app.