James, Tony and Robert

The most important things to have in a journal app would be:

1. Having a lot of useful features (But not so many that you have no use for the majority of them)

2. Simple and non distracting design

3.Integration with other methods of personal record keeping (eg. social media, note-taking apps, blogs)

and 4. Minimal setup, so as not to impede creative thought or spontaneous ideas.

http://www.easyjournaling.com/2011/10/so-what-is-the-best-journal-app-for-the-iphone/