AI signature designer with 30+ celebrity styles personalized to your name
Stage
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Founded
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Based in
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Pricing model
Freemium
Free
Pricing
Free: $0, includes one project with up to three documents, unlimited notes and version history, imported sources, and 50,000 lifetime starter AI tokens. Pro monthly: $9.99/month with 1,000,000 AI tokens per month. Pro annual: $69.99/year with 1,000,000 AI tokens per month.
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Key features
AI writing operations scoped to a passage (expand, outline, strengthen, summarize, critique, tone, plot, rewrite)
Long-form projects keeping notes, sources, documents, versions together
Voice Profile keeps whole manuscripts in consistent voice
Audio notes transcribed into the project
Long-form editor with outline navigation, word goals, focus mode, and local style statistics
Over 30 celebrity-inspired signature styles
Signature analysis on five dimensions
AI-generated personalized signatures
Step-by-step animated learning tutorials
Practice tool with scoring
Signature style quiz
Support for 21 languages
Before-and-after signature comparison
What makes it different
All writing and organization features work without AI; AI is optional
AI operates on your notes and sources, not a blank prompt, keeping context across sessions
Text never used to train AI models; all writing remains private
Every AI result appears as a suggestion beside the draft; nothing rewrites in place without approval
One project holds multiple chapters with notes and sources; suitable for book-length manuscripts
Hand-writable signatures, not just digital fonts
Designs created in minutes instead of days
Step-by-step teaching breaks signatures into maximum 8 steps
STRUT
Calligra Signature