Free: 3 generations per day. Starter: $5 for 25 credits. Writer: $12 for 75 credits. Novelist: $25 for 175 credits. One-time payments, no subscription.
Free: 10 credits (one-time). Monthly: $7/mo for 70 credits. Yearly: $65/yr for 600 credits.
Key features
Generate complete fanfiction scenes with fandom, characters and tropes
Write 3 free short scenes daily without sign-up or credit card
Support for any fandom including anime, books, games, movies and TV
Pick from multiple tone options including fluff, angst and humor
Generate with AO3-style title, rating, summary and tags
General and Teen And Up ratings only, no explicit content
Choose point of view: first, third or second person
TYPE-FORMULA pipeline that extracts insight types (diagnostic, wisdom, contrarian, data-backed, framework, story) and applies viral structures
Knowledge Bank to store, browse, and reuse extracted insights
10+ viral formula structures including parallel repetition, conditional framework, and bridge analogy
Chrome extension for scheduling posts directly to Substack
Rich-text editor with HTML and plain text export
MCP integration for Claude and Cursor
Automatic article URL processing from published or draft posts
Priority processing for paid plan users
What makes it different
Free without requiring account creation or credit card
Simplified interface compared to writing detailed prompts for general AI chatbots
One-time credit purchases with no subscription required
Credits never expire
Designed specifically for Substack writers with formulas trained on viral patterns
Two-stage TYPE-FORMULA process instead of generic AI summarization
Knowledge Bank compounds over time as more articles are processed
From URL to scheduled post in minutes with no copy-paste needed