You may want to spend some time working on how your app shows up in the app store. I was looking for the kindle app and Stryoist showed up. Why? Its not a reading app, and no other major writing app showed up.
When I did a search for Scrivener, other apps showed up too, but not Storyist
When I search for "writing", scrivener was first, and Storyist was way down, lost amongst a lot of relevant and irrelevant apps
Just a suggestion. Maybe you have already tried to make this happen.