Have you ever kept a journal or diary? For writers, it's almost a given that you're going to keep a personal log of what you do during each day, how you feel, or interesting things that might create that prize-winning book some day. For others, it's a way to keep track of health issues, emotions, relationships, the growth of a child or the decline of an aged parent. Day One (US$9.99 for Mac, $1.99 for iOS) is a well-designed and implemented journal app for Mac OS X and iOS.
Day One for Mac
First, let me describe the Mac app. It's available through the Mac App Store and loads quickly. When launched, Day One recognizes whether or not you have Dropbox installed, and asks if you wish to use that service for syncing with the iOS app. Day One also supports iCloud for syncing -- it's easily enabled through the app preferences.
The next thing the app asks is whether or not you want to enable reminders and quick entry in the menu bar. Reminders will prompt you daily to update your journal, while quick entry makes writing an entry as easy as clicking an icon in the menu bar and typing your words.
The user interface of Day One for Mac is spare and functional. On the left side of the app window are five buttons -- one to add a new entry, one to show your entries in a list format, one to show your entries on a calendar, another to display "starred" or favorite entries, and a final button for setting reminders.