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.
Future Me - Send an email to your future self
Momento - Momento is a unique diary/journal writing app for iPhone & iPod touch, which provides a quick...
Letter to Yourself - Send a physical letter to your future self
Reminisce Journal - Reminisce Journal is a free iOS and Android app that helps you to capture live moments, daily activities, thoughts, ideas and travel logs, etc.
Dabble Me - Your own private place to write. A journal/diary to help you remember what's happened in your life.