AI grammar checker for iPhone & Mac Typos? Hammy eats them.

The cutest AI writing buddy for iPhone and Mac. Hammy fixes your spelling, grammar and tone wherever you type.

  • iPhone keyboard + Mac app
  • Sign in with Apple
  • No ads

Hi, I'm Hammy. I eat typos.

Animated demo: Hammy finds seven typos in “i cant beleive its alredy Friday. their going to love you're idea!” and fixes them to “I can't believe it's already Friday. They're going to love your idea!”

Spelling, grammar, punctuation, rewrite, tone and translate.

Hammy waving hello

Hi, I'm Hammy

I live in your keyboard and I snack on typos. Misspelled words? Nom. Missing commas? Nom nom. That awkward sentence you rewrote four times? I'll make it sound like you, only flawless.

Mac + iPhone

Works everywhere you type.

Mail, Slack, Notion, Chrome, the group chat. If there's a blinking cursor, Hammy's on it.

Mac

Right next to your cursor.

Hammy lives in your menu bar and hops in beside whatever you're typing, in any app. Squiggle, click, fixed. Meet Hammy for Mac

  • Typing
  • Checking
  • Fixes found
  • All good
  • Listening
  • Mail
  • Safari
  • Chrome
  • Slack
  • Notion
  • Messages
  • + the rest
iPhone

Inside your keyboard.

Switch to the InkHammy keyboard and type like normal. Hammy counts your typos and fixes them with a tap.

The InkHammy app

Paste. Tap. Flawless.

Long email? Cover letter? Caption you've rewritten nine times? Drop it in the app and let Hammy go typo hunting.

  1. Paste

    Drop in anything you wrote. Emails, essays, captions, that text to your landlord.

  2. Tap

    Hit Fix and Hammy sniffs out every typo, missing comma and wobbly sentence.

  3. Flawless

    Copy the clean version and hit send like a pro. Not a single typo.

Rewrite + tone

Same words.
New vibe.

Pick a vibe and Hammy rewrites it in one tap. Fancy for your boss, sweet for your mom, short for everyone.

Your drafthey sorry for the late reply, i think maybe we could move the call to friday if thats ok?
FormalApologies for the delayed reply. Would it be possible to move our call to Friday?
Your turn

Squash the typos.

Tap every squiggle before Hammy eats them all himself.

Dear diary, today I sent an to my boss, signed it “best ” and texted my crush “ so cute”. I need a hamster. Tomorrow I'll try .

Hammy hunting typos with a pen

0 of 5 typos squashed

Sticker pack

Meet Hammy. All twenty moods.

One very inky hamster. Poke him, drag him around, make a mess. He loves it.

Tip: on a computer you can drag the stickers around.

Pricing

Snack free. Feast with Pro.

Hammy checks everything you write for free, and fixes 5 typos and rewrites 3 messages a day on the house. Pro takes every limit off, on your iPhone and your Mac.

Free

$0/ forever

Just sign in. No card needed.

  • Unlimited typo checks
  • 5 fixes a day, on the house
  • 3 rewrites and tone changes a day
  • See every suggestion Hammy finds
  • iPhone keyboard, iPhone app and Mac app
Start free

Weekly

$9.99/ week

Billed weekly. Cancel anytime.

  • Unlimited spelling, grammar and punctuation fixes
  • Unlimited rewrites, tone changes and translations
  • iPhone keyboard and paste-and-fix app
  • Mac app that works in all your apps
Start weekly
Best value

Yearly

$99.99/ year

$1.92/week · save 81%

  • Everything in Weekly
  • Unlimited spelling, grammar and punctuation fixes
  • Unlimited rewrites, tone changes and translations
  • iPhone keyboard, iPhone app and Mac app
Go yearly
  • iPhone: billed through the App Store
  • Mac: Stripe web checkout for the download, the App Store for the Mac App Store edition
  • One Apple sign-in unlocks both

Prices in US dollars. Your local price is shown before you confirm. Subscriptions renew automatically until you cancel. Free fixes refill 24 hours after you use the first one. Unlimited checks follow our fair-use limits.

FAQ

Questions? Hammy's got answers.

Does it work in Chrome, Slack, Notion and Mail?

Yes. On Mac, InkHammy uses macOS Accessibility to see the text near your cursor, so it works in the apps you already use: Chrome, Safari, Slack, Notion, Mail, Messages and more. You allow it once in System Settings → Privacy & Security → Accessibility.

Why does the iPhone keyboard ask for Full Access?

iOS only lets a keyboard reach the internet when you turn on Allow Full Access. Hammy needs it (plus a signed-in account) to send the text near your cursor for AI corrections. Without it, the keyboard still types and uses on-device spelling. Password and other secure fields never reach third-party keyboards.

How much does it cost?

InkHammy is free to start. Sign in and Hammy checks everything you write, shows every suggestion, and fixes 5 typos and rewrites 3 messages a day on the house. Hammy Pro makes fixes, rewrites, tones and translation unlimited for $9.99 a week or $99.99 a year (that's $1.92 a week). On iPhone you subscribe through the App Store. On Mac, the website download checks out securely on the web with Stripe, and the Mac App Store edition subscribes through the App Store. Sign in with the same account and Pro works on both.

Can I cancel anytime?

Yes. On iPhone or the Mac App Store edition, open your Apple Account's Subscriptions (on iPhone: Settings → your name → Subscriptions → InkHammy). With the Mac download, choose Manage subscription in the app to open the Stripe customer portal. You keep Pro until the end of the period you paid for, then Hammy goes back to 5 free fixes a day. Deleting the app doesn't cancel a subscription.

How do I sign in?

With Apple. Use the same Apple account on your iPhone and your Mac and your free fixes and subscription follow you.

Which languages does Hammy speak?

Hammy is tuned for English, so that's where his corrections shine. The Translate action can also rewrite your text into other languages, like French, Spanish, German or Japanese.

What happens to my text?

The text near your cursor goes to InkHammy's correction service, which passes it through Vercel's AI Gateway to our AI providers to create suggestions. They keep none of it and never train on it, and the correction service doesn't store it. The apps also send diagnostics (like crash reports, errors and the text involved in a correction) to our own GlitchTip server, kept for up to 90 days. Passwords and secure fields are never collected, and your writing is never used for advertising. There are no ads in InkHammy. Our website and iPhone app do measure which ads bring people here, and you can turn that off from Privacy choices at the bottom of the page. Read the privacy policy.

What do I need?

An iPhone on iOS 17 or later, or a Mac on macOS 14 Sonoma or later. Hammy needs an internet connection for AI fixes.

Let Hammy eat your typos.

Free to download. He's hungry.

The Mac app downloads on your Mac: open inkhammy.com/mac there.