Free: $0 forever with daily allowance after 7-day trial. Pro month: $1.99 for 30 days. Pro year: $19.99 for 365 days.
Free trial: 7 days with 500 KI-Credits, no credit card required. Pro: $20/month ($16.67/month billed yearly) with 2,000 KI-Credits per month. Scholar: $60/month ($50/month billed yearly) with 6,000 KI-Credits per month, team of 6 people included, additional seats $10/person/month. KI-Credit packages
Key features
Fix with grammar and tense correction
Native rewrite suggestions
Works in every application with text boxes
Suggested replies with four options
Translation between languages
Custom snippets with shortcuts
Personal writing style customization
Explanation of corrections
Optional chat context for tone matching
PDF and EPUB reader with highlighting and annotations
Automatic source attribution for notes
Support for 10,000+ citation styles including APA, IEEE, GB/T 7714
AI-assisted writing from verified sources
Import from Zotero, BibTeX, and RIS
Import notes from Obsidian Vault and Notion
Real-time collaboration with role-based permissions
Infinite whiteboard for visual thinking and organization
What makes it different
No subscription, pay once with no auto-renewal
Works across all Mac applications through accessibility
Preserves personal writing voice with customization
Unified workflow from reading to submission with traceable source attribution for every statement
Persistent knowledge tree that grows across projects, with AI-powered connection discovery
AI writing that only drafts from user's own verified sources, maintaining research integrity
Repurpose sourced notes into posters, slides, infographics without re-typing
Offline writing with automatic synchronization across devices and team members
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