Rewrite or reply to your messages before you send them, choosing from safer, funnier, or custom tones
AI study tool that turns lectures and learning materials into notes, flashcards, quizzes, and tutoring
Stage
Startup
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
Free: $0 forever for on-device rewrites with unlimited rewrites, no account required. Pro: $3.99/month or $39.99/year; new subscribers get a 14-day free trial and can cancel anytime.
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Key features
Safer tone that clarifies and reduces hostility
Funnier tone that changes register
Custom tone by typing your own instructions
Cloud rewrites for Pro subscribers
How I Sound feature to apply your voice to rewrites
Support for longer drafts on Pro
Works in iPhone keyboard and as an app
Automatic summarization of lectures and content
AI-generated flashcards with active recall
Auto-generated practice quizzes
24/7 AI Tutor for question answering
Support for multiple file formats
Live lecture recording capability
Unlimited uploads and daily usage
Per-session progress tracking
Multi-language support
What makes it different
Never sends messages automatically—you always copy and send manually
Drafts never used to train models; privacy-first design
Free on-device rewrites with no daily limits or quotas
Works directly in iPhone keyboard for seamless workflow
Designed specifically for learning with science-backed cognitive science methods
Supports more file types and formats than competitors
tono
Mindgrasp