Rewrite or reply to your messages before you send them, choosing from safer, funnier, or custom tones
AI academic writing tool and research assistant for researchers and students
Stage
Startup
Established
Founded
Not given
Not given
Based in
Not given
SG
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.
Monthly Plan, Annual Plan, Quarterly Plan available. Multi-year Plans: 2 years ($229) or 3 years ($289). Paperpal for Teams offers up to 25% savings on annual subscriptions. Student discounts available.
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
Grammar check with academic-grade suggestions trained on millions of scholarly edits
Plagiarism checker against 99 billion sources
AI paraphraser to restructure and improve academic tone
Research and citation in 10,000+ citation styles
Access to 250 million verified research articles
Pre-submission checks for 1,500+ top journals
Chat with PDFs to extract key insights
Works across MS Word, Google Docs, Chrome, and Overleaf
Translator for multiple languages
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
Built exclusively for academic writing, trained on millions of scholarly articles
All-in-one platform combining writing assistance, citations, plagiarism checks, and pre-submission support
Works seamlessly within existing writing tools without switching applications
Used by over 5 million researchers and trusted by 1,500+ journals
Maintains academic integrity and originality of user work
tono
Paperpal