NovelShaft

NovelShaft helps fiction writers keep manuscripts, story notes, and AI conversations in one workspace.

Build the story around your manuscript

Use structured templates for character profiles, worldbuilding, outlines, scene cards, and clues. Keep the details that matter close to the story you are writing.

Work with an AI agent that can use your references

Ask the agent to work with your project materials, watch its progress as it reads references and checks its work, and review the result beside the manuscript. You remain the author and decide what becomes part of the story.

See a complete example

The screenshots use a fictional lighthouse mystery to show character profiles, scene planning, and AI-assisted work in the actual product.

Try NovelShaft

Available on the web and iOS, with English and Japanese interfaces. An account is required. Start with the free plan; optional paid subscriptions provide different AI usage allowances.

Watch the English product walkthrough — the video uses a separate sample story.

Explore the full product gallery on Product Hunt.

Built by Yutaro Amano. Follow NovelShaft on X for product updates.