Now on Mac · iPhone, Linux & Windows on the way

Your words, without the work.

Press one key. Three finished replies — in your voice — are already waiting. And dictation that sounds like you, anywhere you type.

Free with your own key · no account/Cloud optional, $10/mo/voice profiles stay local

Context-aware replies

It reads the thread before it writes.

Dictation tools turn speech into text. Tonecast reads the whole conversation, offers three replies in your voice, and drops the one you choose straight into the app you are already in.

Gmail
ArchiveReportDeleteSnooze1 of 248

Q2 planning + budget review

Planning
AAlex RiveraCan we lock the planning session for Tuesday? The team wants to fold in budget review…
SYouLet me check the numbers — Taylor flagged the budget piece isn't final yet…
TTaylor ChenThe figures won't be locked until Thursday. I'd rather not present a draft to leadership…
A
Alex Rivera to me, Taylor ▾

Hi Sam,

Following up on the thread — I know the numbers are still moving, but the offsite is Monday and leadership wants a direction locked before then.

Could we still do Tuesday as a working session? Taylor can bring whatever's ready and we treat the budget piece as provisional. I'd rather have an imperfect plan we can react to than nothing at all.

Let me know what you think — happy to adjust.

Alex

Tonecastreading the thread · 4 messagesthree replies, in your voicewriting your reply
  • Confirm Tuesday1

    Tuesday works — I'll send the budget notes beforehand.

  • Propose Friday

    Friday's cleaner — it gives us time to tighten the numbers.

  • Ask scope3

    Before I lock it in — what scope are you picturing?

Reply to Alex

Hi Alex,

Thanks for the nudge — I know the offsite is bearing down on everyone.

On timing: Tuesday is doable, but Taylor's right that the budget figures won't be final until Thursday, so a Tuesday review would be provisional at best. If we can hold until Friday, we walk in with a complete picture instead of caveats.

A middle path: keep Tuesday as a 30-minute working session to lock the plan, then a focused budget pass Friday once the numbers land. Leadership gets a direction before the offsite without anyone presenting half-baked figures.

I'll send the updated numbers Thursday evening either way so everyone can pre-read.

Best,

Sam

Voice

Whisper takes dictation. Tonecast takes direction.

Hold Fn and talk. Whisper-class tools stop at transcription — Tonecast polishes your words into your voice, pasted at your cursor. And when you open with the wake word, it stops transcribing and starts doing.

Dictate
Speak naturally — filler dropped, grammar fixed, tone matched to where you're typing.
Command
“Tonecast, answer this email.” “Tonecast, make this shorter.” Say what you want done — it's done.
Fn● dictation▸ command

“runningtenminuteslategrabmeaflatwhite?”

Running ~10 min late — could you grab me a flat white?

polished · pasted at cursor

Tonecast,answerthisemailpoliteno,I'mtraveling”

drafting in your voice…

Thanks for thinking of me — I'm traveling that week, so I'll have to pass this time.

reply drafted · ⌘V ready

Voice range

It learns how you talk to your boss. And your mom.

Same you. Different voice. Every conversation.

The mom textWhatsApp

Are you coming for dinner Sunday?

yeah Sunday works! what should I bring

Casual, lowercase, warm

The awkward replyAny app

Staring at the same sentence for 10 minutes...

Hey -- sounds good, I'm in. Let me know the details.

Natural, confident, relaxed

The CEO emailSuperhuman

Thoughts on this direction?

Hi Alex, I've reviewed the proposal and think the direction is strong. Two thoughts on the timeline...

Polished, structured, 2 paragraphs

The group chatiMessage

47 unread messages

just caught up -- I'm down for Saturday. Alex, your place?

Quick, casual, contextually aware

Voice profiles

Your voice, visualized.

Casual with friends. Formal with clients. Too many exclamation marks with your sister. You can see it, edit it, or delete it.

Email

Ready
Formality85%
Warmth45%
Brevity30%
Emoji usage5%

WhatsApp

Ready
Formality20%
Warmth80%
Brevity70%
Emoji usage60%

Slack

Ready
Formality40%
Warmth60%
Brevity65%
Emoji usage25%

iMessage

Ready
Formality15%
Warmth90%
Brevity80%
Emoji usage45%

Contact profile

Alex

Email

More direct than default email. Shorter openings. No exclamation marks. Signs off with first name only.

directwarmbriefno emoji

Local and editable

Profiles are markdown filesview
Raw messages are not stored in profilessafe
Clear voice data any timedelete

Quickstart

Open source. Native. Ready in minutes.

No onboarding maze. Install the app, choose direct BYOK or managed Cloud, and call Tonecast from whatever you are writing in.

§rewrite
§reply
Fndictate
setup

$ download Tonecast.dmg

Add keys or start Tonecast Cloud in Settings

Press §, ⌘§, or Fn anywhere on macOS

  1. 01

    Download the Mac app.

    Tonecast lives in your menu bar and appears only when you call it.

  2. 02

    Choose keys or Cloud.

    Bring Anthropic and Groq keys for direct mode, or use Tonecast Cloud if you want setup handled.

  3. 03

    Press the hotkey.

    Rewrite selected text, generate replies, or hold Fn to dictate polished text.

Platforms

One Tonecast. Everywhere you type.

Start on Mac today. Your voice profiles and hotkeys travel with you as Tonecast lands on every platform you write from.

macOS

Available now

Native menu-bar app, in private beta today.

iPhone

Coming soon

A keyboard that dictates and replies in your voice.

Linux

In the works

Same hotkeys, your distribution.

Windows

In the works

Reply and dictate anywhere on Windows.

Works in

SuperhumanGmailSlackOutlookWhatsAppApple MailTelegramiMessageTeamsChromeDiscordLinkedInXSafariAny app

Pricing

Free by default.

Bring your own keys for direct private mode. If you do not want to manage provider keys, Tonecast Cloud is optional at $10/month or $96/year.

TonecastWispr FlowsuperwhisperGrammarlySuperhuman Mail
Reads conversationsNoNo
Learns voice per contactNoNoNoNo
Generates reply optionsNoNo
Voice dictationNoNo
Bring your own keyNoNoNoNo
Works offlineNoNoNoNo
Multi-platformSoon
PriceFree BYOKCloud optional: $10/mo$15/mo$8.49/mo$30/mo$30/mo

Early access

Your words,
without the work.

Tonecast is in private beta on Mac. Join the early-access list and we will send your invite — iPhone, Linux, and Windows are on the way.

Early-access invites and launch notes. Nothing else.

Prefer setup handled for you? Get Tonecast Cloud →

No account for BYOK.Open sourceProfiles stay local