Lyra

Just type.
Send it better.

Lyra knows how you write, and who you’re writing to, everywhere you type.

Download for Mac

7 days free · then $69.99 once · Apple Silicon · macOS 14+

Ready to see how it works?

Works anywhere
you can type.

Mail, Slack, Cursor, Notion, WhatsApp — Lyra rewrites where you already write. No window to switch to.

Slack
Rewrite Tab
+ Aa @

Lyra learns how
you write
to each person.

The same thought doesn't sound the same to your manager, your mum, and the group chat. Lyra keeps your voice, per person.

You typed cant make it tonight, can we move it

I can't make tonight's session — could we move it to later this week? Sorry for the short notice.

Learned from messages you actually sent — your words, not Lyra's rewrites — and kept on your Mac. Turning that history into a per-person profile sends a small sample to our server to be classified; it isn't stored there. Only with Lyra Cloud, and off unless you switch it on. See exactly what goes where.

Quietly intelligent.
Never in the way.

Works everywhere

Mail, Slack, WhatsApp, Notion, your CRM — if you can type in it, Lyra works in it.

100% private

Everything runs on your Mac and nothing you write ever leaves it — it even works on a flight. The cloud is only there if you choose Lyra Cloud. See what goes where.

Deterministic first

Mechanical fixes come from an open-source rules engine, not AI guesses — instant, and never wrong about its/it's again. See the engine.

Knows when to shut up

A quality gate prefers silence over a suggestion Lyra isn't sure about. Your meaning is never "corrected."

Your words stay yours

Names, jargon, Hinglish, lowercase chat — Lyra preserves your register instead of sanding it into LinkedIn voice.

Cloud-grade when it's hard

Tough rewrites, other languages and tone reach for a cloud model — behind the instant on-device result, so you never wait. With Lyra Cloud only, off by default. See what goes where.

macOS 14+ · 7 days free · 100% private

“For the most part exactly what I want from a writing assistant.”

r/macapps

“The fact that it just works in every app — that's the bit Grammarly never got right for me.”

r/macapps

Built in public by a solo founder. Say hi → @buildbypratik

Pay once.
Keep it for good.

Everything runs privately on your Mac. Add the cloud only if you want it.

Lyra

$ 69 .99
once

Every on-device feature, yours for good.

  • Fixes and rewrites as you type, in every Mac app
  • “Rewrite for clarity” on longer messages
  • ⌘⌘ Professional and Friendly tones
  • 100% private: runs on your Mac and works offline
  • Personal dictionary
Try free for 7 days

No card for the trial · Apple Silicon Mac, macOS 14+

Lyra Cloud

$ 9 .99
/month or $99.99/year

Optional. A larger cloud model when you want it.

  • Everything in Lyra, plus:
  • Cloud polish for long or tricky text
  • Every language, not just English
  • Includes the app while you're subscribed
  • Off by default. Switch it off any time in Settings
Download

Subscribe from Lyra's Settings. See what goes where.

Teams

Custom plan

Rolling Lyra out across a team, or writing inside a regulated environment? Tell us what you need and we’ll put a plan together.

  • Volume licensing
  • Centralised billing
  • Deployment & security review support
Contact us

founder@heylyra.co.uk

7 days free, no card. Then buy once and keep it. 14-day refund on the one-time purchase, 30 days on Lyra Cloud — see Terms.

Product demo

See Lyra
in action.

The full walkthrough, plus two moments from a normal day on your Mac. Hover any clip to play it.

Lyra

Hover to play · click for sound

Rewrite anywhere

Hover to play · click for sound

Inbox, handled

Hover to play · click for sound

FAQ

Questions,
answered.

Everything you might want to know before you download. Still curious? Message me on X.

100% private. Everything runs on your Mac, and nothing you write ever leaves it unless you choose to subscribe to Lyra Cloud. Even then, it sends only what's listed on the cloud page. Lyra also sends usage telemetry linked to your account; it never includes what you type, and you can switch it off in Settings. Exactly what runs where: heylyra.co.uk/cloud.

Yes for everything that runs on your Mac — the rewrites you get while typing need no connection at all. If you subscribe to Lyra Cloud, its extras simply pause while you're offline and resume when you're back; without it they never run at all. Here's the full breakdown.

Grammarly floats a widget over your text and asks you to review it. Lyra shows a quiet pill near your caret — Tab accepts, keep typing to ignore. It preserves your meaning and your register rather than formalising everything, your everyday writing stays on your Mac, and it learns how you write to each person. Fuller comparison on the Grammarly alternative for Mac page.

Apple's Writing Tools need you to select text and invoke a menu. Lyra is ambient — the fix arrives as you type, with nothing to select. It learns your voice per person, and it behaves identically in every app rather than best in Apple's own. Side by side on the Apple Writing Tools alternative page.

Any Apple Silicon Mac (M1 or later) running macOS 14 or newer. Lyra sizes the model to your Mac's memory automatically, so it stays fast on a base MacBook Air and gets a quality bump where there's headroom. Intel Macs aren't supported.

Lyra is a one-time purchase: $69.99 and it's yours for good, with every on-device feature included. Every new user gets a 7-day free trial, no card. Lyra Cloud is an optional subscription ($9.99/month or $99.99/year) that adds a larger cloud model for long or tricky text and every language, and includes the app while you're subscribed. Refunds: 14 days on the one-time purchase, 30 days on Lyra Cloud — see Terms.

A note from the founder

I'm Pratik. I spent ten years as a lead engineer in London fintech — environments where tools like Grammarly were banned, for a good reason: they send everything you type to someone else's server.

Lyra is the writing assistant I wasn't allowed to have. It runs on your Mac, fixes your writing as you type, in every app — and it learns something no cloud tool has attempted: how you write to each person. Because the truth is, you don't write to your boss the way you write to your best mate. Your writing assistant should know that.

Nothing you type is ever used to train anything, and where your text goes is always your decision, not mine. The person answering your email is the person who wrote the code.

If Lyra makes you sound more like yourself, tell someone. If it falls short, tell me — I read everything.

— Pratik

pratik@heylyra.co.uk @buildbypratik LinkedIn