Free plan at $0/month with basic writing features and limited AI allowance. Plus plan at $9/month with unlimited docs, encrypted cloud backups, external connections, and x5 more AI usage. Pro plan at $29/month with all Plus features plus multi-agent mode and x15 more AI usage, marked as Best value.
Free: 10 credits (one-time). Monthly: $7/mo for 70 credits. Yearly: $65/yr for 600 credits.
Key features
Intelligent AI assistant with chat, edit and write capabilities
True offline experience with local file storage
Web research and image generation
Deep mode for complex creative tasks
Multi-agent mode for collaborative AI
Import and export multiple file formats
Encrypted cloud backups
Page and pageless document viewing modes
External connections for integrations
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
Keeps your files locally on your machine instead of on company servers
Combines offline-first document editing with integrated AI without tab-hopping
Works with your existing file formats and imports from popular platforms
Fast performance for large documents with flexible viewing options
Designed for writers and thinkers who care about word quality
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
Strokes
Quick Viral Notes