iOS: Day One is one of the most gorgeous journalling apps out there. Today, it updates with a few new features as well as a new, iOS 7-friendly skin.
What's nice about Day One is that it collects and collates all kinds of data into your journal so you can get a better idea of what you're doing when you make notes. In the past, this just meant the weather, but now Day One integrates the music you're listening to and your activity to give you a better idea of the context of your journals.
It's not just the steps you're taking either; Day One also now lets you pick the activity you're doing when you make a note, so you can add in whether you're exercising, sitting or doing some other activity.
Day One ($5.49) [iTunes App Store]