FireQuill vs Lucid Book

FireQuill is a web-based long-form writing system for novels, non-fiction, podcasts, documentaries, games, and musicals. It combines a story bible with generation that tracks characters, continuity, and voice. Its character engine follows characters’ voice, psychology, knowledge, relationships, and arc scene by scene, then proposes changes for the writer to accept or reject. Eight specialist validators cover developmental and line editing, plot, continuity, argument, evidence, counterargument, and audience fit; they flag issues rather than rewriting text. Non-fiction writers can upload PDFs, documents, and notes so chapters can draw on retrieved passages. Export options include Markdown, Word, EPUB, KDP-ready EPUB, print PDF, Fountain, Final Draft, and libretto formats. The free plan is free for two projects and has no AI. Companion costs $10 a month; Author is $20 a month; Studio is $30 a month. Audiobook and podcast narration are pay-as-you-go add-ons on any paid plan. FireQuill says it does not sell user content or train public models on it, but sends relevant writing to AI providers when users request generation or checks.

Lucid Book is a browser-based AI story-play platform built around playable books. You can prepare a story in advance or begin with one character and add others as the story develops. During play, controls let you alter weather, time, genre, mood, and locations. Character profiles can define roles, personalities, behavior, interests, and relationships, and you can build worlds with detailed locations and connect characters to places through roles. The site says its AI uses book-scale context to retain story details and keep characters and events consistent. Books can be shared by link or published in a community library, and editing can be locked. Stories can be played in any language. Lucid Book adapts to PC, tablet, and mobile screens, and can be installed as a Progressive Web App. It is labeled beta and currently free; the FAQ says users can start by making a first playable book. The Privacy & Cookies Policy page says the policy document could not be loaded, leaving the available privacy information limited.