Bunsho
What is Bunsho?
Bunsho is novel-writing software for macOS and Windows that combines a manuscript editor with a continuity engine. It tracks characters, timelines, locations, objects, events, and world rules from the writer's prose, then identifies continuity errors, contradictions, timeline problems, and potential plot holes. Bunsho also includes World, Planner, Continuity, and Director Mode features to help writers organize stories, plan chapters, check character knowledge, and draft directed scenes while preserving author control.
How to use Bunsho?
Download Bunsho for macOS or Windows and begin writing in the integrated editor without creating an account. As you write, Bunsho builds a connected model of your characters, locations, events, objects, timelines, and world rules. Open World to review story elements, Planner to organize chapter goals, or Continuity to run checks and compare conflicting passages. Sign in when you want to use AI features such as continuity checking and Director Mode. In Director Mode, tag characters, describe the next scene, review the preflight warnings and beat sheet, then accept, re-render, or discard generated prose.
Bunsho's Core Features
Integrated manuscript editor with binder, page, and story views
Continuity checker for characters, timelines, world rules, scenes, and objects
Plot-hole and contradiction detection with both source passages shown
Connected story model built automatically from the writer's prose
World view for characters, places, objects, and story rules
Planner for organizing chapter cards and scene goals
Director Mode for planning and drafting character-directed scenes
Preflight checks against character knowledge and established story facts
Impact mapping that shows which scenes and callbacks are affected by a change
Desktop apps for macOS and Windows
Local-first manuscript workflow with import and export support
Bunsho's Use Cases
Check a novel for inconsistent character ages, timelines, or backstory details before publication
Track world-building rules, locations, objects, and character knowledge in a fantasy or science-fiction series
Plan chapters and directed scenes while ensuring characters act consistently with what they already know
Identify which scenes and callbacks need review after changing an established story fact
Draft long-form fiction without manually maintaining spreadsheets or separate story-bible documents
FAQ from Bunsho
What does Bunsho do?
Is Bunsho an AI that writes an entire book?
Can I use Bunsho without an account?
Which platforms does Bunsho support?
What does the continuity checker look for?
Does Bunsho rewrite my existing manuscript automatically?
Does Bunsho use AI?
What is included in the free plan?
Bunsho Reviews (0)
Bunsho Pricing
Free
$0
One project, World and Planner included, plus starter AI credits for trying the continuity checker and Director Mode.
Quill
$8/month
Unlimited projects and the full editor, World, and Planner features, with no AI.
Storyteller
$15/month
Everything in Quill plus the continuity checker. The plan currently includes 50,000 credits per month and is described as enough to read a full novel and check approximately 90 additional chapters.
Saga
$29/month
Everything in Storyteller with 100,000 credits per month, described as approximately 250 chapter checks for daily drafting and series work.
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