I use WordPress as a blog engine. I started using it over 12 years ago – at first I hosted it myself, and a two years ago I shifted to using wordpress.com's hosted service, with which I've been very happy. I do all the editing through a browser – until now.
I tried out the WordPress IOS app some time ago, but the editing mismatches and inability to provide a consistent writing experience with the browser based interfaces left me immensely frustrated. I deleted it, and just using Safari or Chrome. Not the greatest experience on a mobile device, but better than nothing. When I was walking about the past couple of months, I heard they had a new editor, so I decided to give it a shot.
Long story short, the new editor (code named Aztec) is a tremendous boost over the existing system, and even in beta a far better experience for me. If you're publishing to a wordpress blog, then I'd encourage you to give it a shot. It's become far easier to include photo's, embed markup, and manage the layout of the writing than it's been in ages.
It's not perfect, but I wouldn't expect it to be in beta form. The means of setting up a scheduled post is still awkward as hell, and selecting categories and other ancillary metadata for a post is fairly constrained. But the editing experience is so far and advanced an improvement that I'd recommend using it immediately.