Fluent. Private. Offline.

Fluent AI writing. Works with Wi-Fi off.

idiomly writes your emails, dictates your notes, summarizes your reading, and translates a room in real time — with AI that runs entirely on your Mac. Nothing logged. Nothing tracked. Nothing watermarked.

Works offline Zero tracking No watermarks
Offline
The idiomly Write window: a letter draft in the editor with the AI Review panel suggesting tone-matched rewrites and a grammar fix.
What it does

All of it in one quiet window.

Writing help, replies, a reading companion, two kinds of translation, and 30+ tones to fine-tune how you sound — all in one native app, all without a connection.

Write & dictate

Grammar fixes, tone adjustments, and fresh structure suggestions as you type. Or speak — dictate straight onto the page and keep your hands off the keyboard.

Grammar · Tone · Restructure · Dictation

Reply for you

Hand idiomly an email or a Slack message and get a reply drafted back. Then set how it should land — quick and casual, buttoned-up formal, or anywhere in between.

Email · Slack · Tone-matched

Summarize & ask

Drop in a book or a report and get the gist in seconds. Then ask anything — idiomly answers from the text, like a reading companion that already finished it.

Summaries · Q&A over your text

Translate text

Turn any passage into another language without leaving your document. Paste it in, pick a language, and keep working.

Any text · Any language

Translate live

Built for seminars, webinars, and meetings — idiomly listens and translates as people speak, so you follow along in your own language. No dial-in, no bot on the call.

Live speech · Seminars & meetings

30+ tones

Dial in exactly how you come across — formal, warm, direct, diplomatic, playful. Rewrite any text through more than thirty tones until it sounds like you meant it.

30+ tones · Works across Write & Reply
Document Intelligence

Summarize, Chat, & Transpose

Drop in any book, corporate report, or academic paper and extract the core insights in seconds. The platform natively analyzes complex layouts across 200+ document types, allowing you to instantly pull out critical data points, action items, and structural outlines. It also acts as an interactive reading companion, letting you ask immediate follow-up questions directly to your files.

The idiomly Summary window: a Pride and Prejudice PDF with a generated summary, prepared follow-up questions, and Summary/Chat tabs.
Thirty-plus tones

Say it in the right voice — 30+ of them.

Formal for the board, warm for a colleague, playful for a friend. Pick a tone and idiomly rewrites your text to match — then keep nudging until it sounds like you. It works everywhere you write, from a first draft to a Reply.

Tone 30+ available
Follow every room

Live translation for the whole meeting.

Turn on Live and idiomly translates continuously as people speak — a running feed you can read while the conversation happens. No dial-in, no cloud service, no one else on the call.

idiomly · Live
Screenshot · Live translate Show the live translation feed.
Why idiomly

Private by architecture, not by promise.

There's no cloud to trust, because there's no cloud. The models run on your machine, so your words never travel — not to us, not to anyone.

Works with Wi-Fi off

No internet, no account, no sign-in. Open the app on a plane and it works exactly the same.

Nothing written to disk

No hidden logs on your Mac and nothing dumped to the console. There's no trail to leak later.

Zero analytics or tracking

No telemetry, no third-party SDKs, no usage metrics. We can't see what you do because we never look.

No retargeting ads

Your writing is never a data source. It isn't sold, shared, or turned into a profile that follows you around.

See for yourself

Turn off your Wi-Fi and watch.

Switch off Wi-Fi, unplug the ethernet, then use every feature. Open Activity Monitor and watch the network stay at zero. The demo is that nothing happens.

Fair question

“But is on-device AI any good?”

idiomly runs a model tuned to fit on Apple Silicon and do a few things well — write, reply, summarize, translate — not everything a data-center model attempts. For the writing you actually do every day, you won't feel the difference. And it works on a plane.

No watermarks

Your words come out clean.

Results arrive as plain, unwatermarked text — yours to keep, publish, or paste anywhere, with nothing tagging where they came from or how they were made.

One download. No account, no cloud, no catch.

Open it and start writing — nothing to sign up for, nothing to configure.

Download for Mac

Requires Apple Silicon (M1 or later) · Web and mobile planned