Day One 1.9.3 (Mac OS X) | 20MB
A simple way to journal. It's easy to quickly enter your thoughts and memories and have them synced and backed up in the cloud.
iCloud or Dropbox syncing to the iPhone and iPad apps, Day One is well designed and extremely focused to encourage you to write more.
Using the Menu Bar quick entry, Reminder system, Calendar view and inspirational messages your memories and thoughts will be preserved.