Have been using Story Chief for 4-5 days now and can safely say...

It's THE BEST AppSumo deal I've ever purchased!

And I've purchased some real good ones ;)

BONUS POINTS for:
- clean writing environment that's got me focused and VERY efficient
- top notch SEO & Readability tool that's clear and simple like the Yoast plugin (only you don't have to login to your Wordpress website to use it)
- auto-save every second
- version history
- Ambassador program: you can send an email to your friends with sharing links for your post
- fast image upload. MUCH faster than via Wordpress. A HUGE time saver for me!
- the Editorial Brief tool that reminds you to clarify what, who, why, for
- editorial calendar. I realize this is a fairly basic function for such a tool but these tools are usually soooo expensive!
- Find story creators. Haven't tested this yet but am very excited about this option and can see how easily writers and reviewers can integrate.

IMPROVEMENTS I'd like to see:
- more call-to-actions. At the moment it's limited to basic email capture form if I'm not mistaken. Would like to offer PDF download in exchange for newsletter subscription.
- evergreen posts (I see it's on the roadmap. Very cool!)

Ok, I've been so excited about this product that I actually looked at the job offers they advertise on their website!!

Well done AppSumo and StoryChief. A match made in heaven :)