Manuscript Consistency Checker

Help novelists catch contradictions in characters, settings, and plot

Problem

The hardest part of writing a long novel is not prose but consistency across a 120k-word manuscript: eye colors, timelines, family trees, and world details often contradict earlier chapters. A French-market writing SaaS offers an AI assistant and character sheets but still suffers high churn, showing authors will pay for keeping a novel coherent, yet existing solutions are not good enough.

Solution

A consistency-focused checker: import a draft and automatically build profiles for characters, places, timelines, and key settings. Cross-check for contradictions, highlight suspicious passages, and suggest fixes. It is not a generic writing AI but a copy-editing copilot for long-form fiction.

Users

Novelists, web fiction writers, screenwriters, murder mystery game creators

MVP

Import docx or plain text manuscripts; auto-extract characters, places, and key settings; detect inconsistencies in names, attributes, and timelines; highlight suspicious passages with a report; support manual corrections and rescanning

Revenue

Subscription at $8–$15/month by word count or project; free tier limits single-scan word count; partner with writing communities and NaNoWriMo-style events

Why now

After the AI writing boom, authors care more about human feel and consistency. High churn in generic writing SaaS shows room for niche proofreading. LLMs make entity extraction and contradiction detection feasible, so an indie developer can build a vertical tool quickly.