|
The reason that it limited to iBooks is that the Apple Device Interface interworks with iTunes via its automation interface, and iBooks is the only application that iTunes supports for the purpose of book handling. On that basis there is not much point in sending to iBooks a format it cannot handle.
Note also that there is no way of writing directly to a folder on an Apple device, so the normal method that is used by Calibre for many other devices does not work. If this restriction is ever lifter by Apple then other options become available.
|