Readers X, Y, and Z are unhappy with Mavericks and iTunes. They write:We recently read that you can't sync your iOS devices' contacts and calendars with iTunes. We are very, very angry. What can be done about this outrage!?I understand and sympathize. Given the ever-greater concerns over privacy it does seem short-sighted to allow only contact and calendar syncing via an online service such as iCloud. I do have a solution. But it costs $20 and it might elicit responses along the lines of "I can't believe you are suggesting that I" followed by a string of obscenities. To help protect my delicate feelings I provide the Anger Trough" below. I hope that those who find it difficult to harness their most fervent feelings will purge their emotions into it before we proceed.My $20 suggestion is that you set up local CardDAV and CalDAV servers for syncing contacts and events respectively. With such servers you can easily sync your contacts and calendar events between your Mac and iOS devices