Subtxt

Subtxt is a story outlining tool for writers who want structure behind their plot, and it works from its own website at subtxt.app.

As an AI outliner, Subtxt helps you plan a story around a narrative model, then shape the plot, theme and conflict with AI assistance.

The approach is data-driven: you get guidance based on your own storytelling approach, and revisions can be measured so you can see whether a draft is improving.

The focus is on finding deeper meaning in a story and on building dynamic sources of conflict, which suits novelists, screenwriters and other creative writers who get stuck at the outline stage.

The workspaces take some learning, and the tool relies on a specific narrative model that will not fit every writer's habits.

Advanced features sit in the higher-priced plans, so check what you actually get before committing to a paid tier.