A fully private writing aid for Mac that suggests the next words as you write
AI writing tool for character headcanons and scene ideas
Stage
MVP
Not given
Founded
2026
Not given
Based in
FR
Not given
Pricing model
Paid
Freemium
Pricing
Free download. Studio license: €29 with Lightning, €39 by card. One-time purchase, no subscription.
Free: 50 welcome Sparks for 7 days (up to 5 standard generations). Spark Pack 500: $4.90 (up to 50 standard generations, valid 365 days). Spark Pack Plus 2,000: $14.90 (up to 200 standard generations, 24% less per Spark, valid 365 days).
Key features
Real-time text suggestions under cursor
Learns your writing style over time
Tone adjustment with '//' command
Translation while typing
Automatic typo correction
Emoji picker with keyboard shortcut
Usage ledger tracking keystrokes saved
Works offline after initial setup
Runs in Mail, Notes, Messages, Safari and most Mac apps
Encrypted local history
Generate structured headcanon ideas with premise, emotional logic, and scene hooks
Reroll and rewrite generations with 3 Sparks per rewrite
Save and share headcanons through public share links
Preset prompt angles for common fandom scenarios
Control panel for tone, angles, and canon distance customization
Generate multiple tones for the same character premise
Account-based result storage with persistent access after Sparks expire
What makes it different
One-time purchase with no subscription or daily limits
Learns your personal style and tone
Works offline in any Mac app
Built-in translation for multiple languages
Templates and tone control built specifically for headcanon generation instead of generic chat
Reusable, structured output designed to be saved and shared with fandom communities
Emotional logic and expandable details for turning ideas into finished fic
Specialized for fandom writers with existing character tension and ships
Focused text-based generation rather than image generation
Souffleuse
Margo