Journalistic - A simple, yet powerful micro journaling app
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Sol Journal - A simple, open-source personal journaling platform
Journal - Organize all your ideas
Thyself - Mindful mood tracking for greater self-awareness
Happyfeed - A simple gratitude journal for iOS