How to Write Better on iPhone with AI — No Copy-Pasting Required

Somewhere between your brain and your send button, a lot of good ideas become mediocre messages. Not because you don't know what you want to say — but because the tools to fix it are always somewhere else.

Most AI writing tools are designed for desktop. On iPhone, the workflow is broken by default: copy the text, switch apps, paste, type a prompt, wait, copy the result, switch back, paste again. That's six steps for one sentence. And every step breaks your focus.

What? is built on a different premise: the AI should live where you already type.

01The copy-paste tax

The average iPhone user sends dozens of messages, emails, and posts every day. Even if you only need AI help on a fraction of them, the context-switching adds up fast. By the time you've bounced between three apps, re-found your place, and pasted back your result, you've spent more time managing the process than writing the message.

The problem isn't the AI. The problem is friction. Reduce the friction and the AI becomes genuinely useful for everyday writing — not just for long-form documents or big projects.

02How What? works

What? is an iPhone app that embeds an AI writing assistant directly into your iOS keyboard and share sheet. The workflow is immediate: type or paste text, choose an action, get your result. No app switching, no copying, no waiting.

• Keyboard extension — tap the What? row in any keyboard to transform selected text without leaving your current app
• Share extension — select text anywhere, tap Share, and run any action directly from the system menu
• Standalone editor — paste a longer draft and work through it iteratively, feeding output back as input
• iCloud history — 50 recent entries synced across your devices, so your work never disappears

It's powered by Anthropic's Claude — the same model trusted by thousands of businesses for its accuracy, nuance, and safety. It understands context, not just words.

0314+ built-in actions

What? ships with a comprehensive set of built-in actions organized by use case. Every one runs in a single tap.

Grammar & clarity

• Fix Grammar — catches typos, grammar mistakes, and punctuation errors
• Simplify — cuts jargon, makes any text easier to read
• Improve Flow — smooths awkward transitions and run-on sentences
• Make Punchy — removes filler words, tightens prose for maximum impact

Tone control

• Make Professional — elevates casual text to polished, workplace-ready writing
• Make Casual — strips the stiffness out of overly formal messages
• More Assertive — removes hedging so you sound confident and direct
• Remove Hedging — eliminates "maybe", "possibly", and "kind of"

Creative & utility

• Humanize AI Text — makes AI-generated content sound like a real person wrote it
• Translate — 15+ languages with cultural context, not word-for-word conversion
• Shorten / Expand — compress or extend any text to the right length
• Analyze Tone — reading level badge and a calm-to-assertive tone meter

0412 specialty packs

Generic writing tools treat every task the same. What? goes deeper with 12 specialty packs — each tuned to a specific writing context with scenario-aware actions that a general AI prompt can't replicate.

Each pack contains multiple scenario-specific actions. The International Pack doesn't just translate — it adapts your writing to Japanese business norms, German directness, French formality, and more. A general AI prompt can't do that reliably.

05Works everywhere you type

What? integrates into iOS at the system level. It's one tap away in any text field, across any app.

The keyboard extension handles the quick fixes — grammar, tone, length — without ever leaving your current app. The share extension handles anything that needs more context. And the standalone editor handles longer drafts where you want to work iteratively, feeding output back as new input.

06Privacy and data control

Privacy is a first-class feature in What? — not a footnote.

• Text is sent to Anthropic's Claude for processing only — never stored, logged, or sold
• API keys are stored in the iOS Keychain, never on an external server
• BYOK (Bring Your Own Key) — connect your Anthropic API key for complete data control and no usage limits
• Results cache locally for offline access without re-sending anything

Power users can combine modes: use the app's built-in access for everyday tasks, and fall back to a personal API key when you need unlimited throughput — all from the same interface.

07Who it's for

If you type on your iPhone — for work, school, social media, or personal conversations — What? will save you time and make your words land better.

FAQFrequently asked questions

This article was published on July 25, 2025.