A story development tool can be very useful in helping you organize all the pieces of your story. If you're a writer, you'll know it's not always easy to keep track of all your characters, plot, settings and events in your story.
Storyist lets you manage all the pieces of your story, includes a text editor, which lets you format both manuscript and screenplays and a storyboard to get a different perspective on your story. You can highlight sections and add notes and organize every element in many different ways with Storyist. I quite liked the use of index cards to jot down ideas and tie them together.
Storyist also allows you to link in between sections to keep your plot well tied up and add specific elements easily.
I did find that Storyist lacked story templates, as it only actually comes with four very similar ones to start with.
Storyist should give you a complete overview of your story and make sure every element ties up well together.