ToneSwap

Paste samples of your own writing. ToneSwap learns your voice and rewrites anything to sound like you wrote it.

Drop in your writing samples. ToneSwap picks up your style, your rhythm, how you actually talk. Then feed it any text. It comes back sounding like you wrote it. Not some bland AI output. Your voice.

Most rewriting tools sound the same no matter who uses them. ToneSwap is different. It studies how you write. Your sentence length. Your word choices. The way you structure ideas. Then it applies that to anything you throw at it. You get rewrites that actually sound human because they sound like you.

The voice matching runs on local fingerprinting, not just prompting. ToneSwap analyzes 14 measurable patterns in your samples. Average sentence length. Vocabulary diversity. Punctuation rhythm. Formality. Sentence openers. Paragraph structure. Every rewrite gets a voice match score from 0 to 100, broken down across rhythm, vocabulary, tone, and structure. You see exactly how close it is to sounding like you wrote it.

Works great for individuals and small teams. Writers who need consistency across channels. Teams that want their brand voice everywhere. Students rewriting essay paragraphs in actual academic English. Professionals tightening up emails before they hit send. Non-native English speakers who want their writing to flow naturally without losing their argument or their voice.

Runs on the web at toneswap.app and as a Chrome extension that works on any page where you write. You highlight the text, pick a tone, and you get a rewrite in your voice without ever leaving the page.

Free to try without an account. Sign up free for 5 rewrites every day, no credit card required. Pro runs 9.99 a month and unlocks 100 daily rewrites, a 1000-word limit, all nine tones, voice match scoring with full breakdown, and up to three separate voice profiles for different contexts like work, personal, and creative writing.