What? - AI Rewriter

What? is an AI writing assistant powered by Claude. Paste any text, pick an action, get a polished result — in seconds, without leaving the app.

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14 BUILT-IN WRITING ACTIONS
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Fix Grammar · Rephrase · Make Professional · Make Casual · Shorten · Expand · Simplify · Translate (20 languages) · Humanize · Improve Flow · Make Punchy · Remove Hedging · More Assertive · Analyze Tone

Humanize strips AI tells — em-dashes, "delve," "leverage," "tapestry," "robust" — and rewrites with contractions, fragments, and varied rhythm so your text reads like a real person wrote it.

Pro subscribers get Claude Sonnet. The most capable model for nuanced edits.

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16 FREE ACTION PACKS — 160 SPECIALTY ACTIONS
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Every pack is free and included. No purchases, no paywalls, no limits.

Writer's Pack — vivid imagery, stronger openings, cliché removal, active voice
Lawyer's Pack — legal precision, plain English, protective hedging, demand letters
Marketer's Pack — headlines, A/B variants, CTAs, SEO, ad copy
Email Pack — match reply tone, cold emails, subject lines, TL;DR, follow-ups
Student Pack — academic tone, paraphrase, thesis, counterargument, study notes
Dating Pack — confident openers, banter, bio glow-up, let them down kindly
Recovery Pack — apologies, de-escalation, boundaries, make peace
Comedy Pack — stand-up style, dry wit, dark humor, roast, absurdist
Funny Pack — universal humor, dad jokes, meme-ready, one-liners, captions
International Pack — Japanese business, German direct, French polite, match any culture
Social Pack — tweet-ify, LinkedIn, Instagram captions, TikTok hooks, threads
Coach's Pack — reflective listening, reframe, SMART goals, hard feedback
Customer Support Pack — empathize, calm angry customers, explain policy, close tickets
Sales & Negotiation Pack — handle objections, follow up, close, counter-offer
Job Hunt Pack — resume bullets, cover letters, STAR answers, salary negotiation
Product & UX Writing Pack — microcopy, error messages, push notifications, button labels

MATCH ANY CULTURAL CONTEXT
Pick a country — Japan, Germany, France, Brazil, India, and 20 more — and the International Pack adapts your text to that culture's communication style without translating a word.

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WORKS EVERYWHERE
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Keyboard Extension — fix or rephrase in any app from your keyboard
Share Extension — select text anywhere, tap Share → What? to process it instantly
Home-Screen Widget — one tap from your home screen
iCloud Sync — history and settings stay in sync across all your devices

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BYOK — BRING YOUR OWN KEY
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Have an Anthropic API key? Use it directly. All Claude models, custom prompts, no monthly caps from us — you pay Anthropic per request. Your key lives in the iOS Keychain and never leaves your device.

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SUBSCRIPTION
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· 3-day free trial — no credit card upfront
· Pro — Claude Sonnet, Writing Coach mode, Before/After diff view, tone meter
· BYOK — your own Anthropic key, unlimited requests, custom-built actions

Payment is charged to your Apple ID at confirmation. Subscription renews automatically. Cancel anytime in Settings → Apple ID → Subscriptions.

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