My go-to writing app on my Mac and my iPad is Ulysses. I love the simple structure and that I can pretty much write anything... from a blog post to something much longer. And my writing syncs between my devices.
Now, my writing syncs between all my devices. Ulysses for iPhone launched today. The app is impressive and includes some great implementations of iOS features — iCloud synced all my content effortlessly, Handoff works great between devices and the share extension works perfectly.
I don't plan on writing long essays on my phone, but I think I'll use Ulysses on the iPhone frequently:
Brainstorming. When an idea strikes, I can add a note directly to the writing app. Since I always have my iPhone with me, I'll be able to capture those random thoughts and convert them into actual posts or essays more easily.
Links. I can use the share extension to send links I find directly to Ulysses. For links I want to write a post about, this will be much more convenient than using a service like Evernote.
Edit on the road. The keyboard on my iPhone isn't great for writing longer pieces, but Ulysses should be perfect for reading and editing on the go.
Ulysses isn't for everyone. It's a Markdown editor, so you need to be comfortable writing in Markdown. And it's not cheap. Ulysses for Mac is $45 and the mobile version is $25. In this era of free and freemium apps, this is an expensive app, but Ulysses is a professional tool and worth every penny.
I was expecting to have to pay for the iPhone version, but because I had already purchased Ulysses for iPad, I got the new Ulysses Mobile with support for iPad and iPhone as a free upgrade.
If you are looking for a Mac writing ecosystem and like working in Writedown, Ulysses might be the perfect system for you. There’s a great review over at MacStories if you want lots of specific details.