Rewrite or reply to your messages before you send them, choosing from safer, funnier, or custom tones
Stage
Not given
Startup
Founded
Not given
Not given
Based in
CH
Not given
Pricing model
Freemium
Freemium
Pricing
Free tier available; Plus and Ultimate paid plans with credit system (1 credit per 100 words). One-time packages and monthly subscriptions available with money-back guarantee within 14 days.
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.
Key features
Paper analysis with scoring across multiple dimensions
Plagiarism detection and AI-written text identification
Citation style and consistency checking
Logical error and argumentation analysis
Grammar, spelling and inclusive language errors
Bibliography verification against trusted databases
Custom requirements upload for university-specific guidelines
Prioritized to-do list for revisions
Defense Studio with voice practice and recorded sessions
Page-by-page feedback with inline corrections
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
What makes it different
Feedback typically delivered within 5 minutes using parallel processing
Comprehensive analysis across structure, logic, language, citations and plagiarism
Data protection with no training on user documents and user-controlled deletion
Money-back guarantee within 14 days if unsatisfied
Trusted by over 5000 students and universities globally
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
PaperCheck
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