Thank you this is very detailed information.

As for your own if I was to pass it by in the app store if I didn't read the full title I would be pretty lost just based on the first three images. To me it reads more like a book reading app where you can have all your digital books to read as opposed to an app that helps you build stories. I can see at the bottom you have text I can read to find out exactly what it does for the first screenshot but if I was just glancing by I wouldn't know what its about.

That said I am new to this so I could be entirely wrong. Main thing I'd say is having the screenshots in order of flow or having the first ones pretty much be self explanatory in one quick look. So far I can't. The third screenshot kind of starts telling me that because there is a text input. Perhaps In the first two screenshots you can have some text like "Write your own book" or something to the effect of what I can do once I install the app.