Day One, the journal app that is just so well-designed that it gained a well-deserved entry in the AppAdvice Top 10: Best Paid iPhone Apps of 2011 list, has once again been updated with new features to make journaling more convenient, not only on your iPhone but also on your iPad.

Version 1.5.5 of Day One promises bug fixes, of course, which should improve the app’s round-the-clock support for certain regional formats as well as its integration with iCloud, a feature that messed up some users’ data when it was introduced to the app a couple of months ago as an alternative to Dropbox syncing. Some minor appearance improvements, including a redesigned menu screen, boldface for titles in list view, font style options, a better-looking app icon and support for the new iPad’s Retina display, are also shipped with the update. I’m not a fan of sound effects in productivity apps, but if you’re into those, you can also expect the popping and clicking of new sounds in the new version.

Day One has also taken a leaf out of Reeder’s book by adding pull-and-release navigation to go directly to an adjacent entry. It’s a mode of navigation that I wish Apple would adopt for at least its Mail app, so I’m glad to see Day One being ahead of the big guy in this respect. And speaking of other apps, Day One now permits direct linking to the app from another app through open URLs. For example, the URL dayone://entries opens Day One straight to the list of entries. Try entering the link in mobile Safari to see for yourself.

For new users, Day One is available in the App Store for $1.99. For old ones, the update is, of course, free. Whichever user group you belong to, you’ll be hard-pressed to find a better and more gorgeous solution for your iOS-assisted journaling needs.