Pocket is a read-it-later service that allows you to save links to well, read later. The ability to save a link from Safari is great. No more bookmarklets! This will make my workflow to save interesting articles or videos better.
Day One is a journaling app. I use it for very personal thoughts or capturing photos that I don’t usually share with the outside world. I like that I’ll be able to add a photo to Day One straight from the Photos app. The other thing that I like is the ability to use TouchID to open the app.
iOS 8 really is going to be great not only for developers but for the users.