AI document generator that makes you sound remarkably good
Turn Substack articles into viral social posts
Stage
Not given
Startup
Founded
Not given
2025
Based in
US
Not given
Pricing model
Freemium
Freemium
Pricing
Free plan with 10 documents and 10k AI credits per month; Pro at $20/month with unlimited documents and up to 100k AI credits per month; Business at $40/month with unlimited AI usage, single sign-on, and organizations.
Free: 10 credits (one-time). Monthly: $7/mo for 70 credits. Yearly: $65/yr for 600 credits.
Key features
Generate document drafts in seconds using AI
Edit documents using natural language prompts
Real-time team collaboration
Full-featured document editor with formatting
Document templates and guided creation
Support for multiple document types
Private and encrypted documents
No data used for AI training
Single sign-on for teams
Organizations management
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
Purpose-built for documents with higher quality outputs than generic AI chat tools
Complete workflow in one place without switching between tools
AI-first platform designed from the ground up for document creation
10x faster than Google Docs
Continuous editing with both AI and manual refinement
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
Spell
Quick Viral Notes