A fully private writing aid for Mac that suggests the next words as you write
AI writing tools to detect, humanize, rewrite and check grammar
Stage
MVP
Startup
Founded
2026
2026
Based in
FR
GB
Pricing model
Paid
Freemium
Pricing
Free download. Studio license: €29 with Lightning, €39 by card. One-time purchase, no subscription.
Free: unlimited AI Detector, 3 daily uses on writing tools, 5 of 9 humanizer modes, 5 of 8 rewriter tones. Starter $9.99/mo (or $7.99/mo annually): 30K words/month, every humanizer and rewriter mode, 500 words per process. Pro $19.99/mo (or $15.99/mo annually): 100K words/month, no per-request word
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
Unlimited free AI detector with no daily limit or signup required
AI Humanizer with 9 writing modes including Standard, Academic, Blog, Formal, and Simple
Statistical detection engine that processes text on own servers with no third-party sharing
AI Rewriter with 8 different tones
Grammar Checker tool included in all plans
Chrome Extension for in-browser humanizing and detection
Brand Voice feature for maintaining consistent tone across 1-3 voices depending on plan
Re-humanize function to generate genuinely different drafts at higher variation
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
Unlimited free AI detector with no daily limits, while competitors limit guests to 3 scans per day
Published accuracy rates with measured false-positive and false-negative rates instead of unverifiable claims
Integrated detect-then-fix workflow keeping flagged drafts in one tool instead of switching between products
Privacy-first approach with AI Detector processing text on own servers with no third-party access
Browser-first start with no extension setup or account creation required before first use
Souffleuse
Coda One