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Your words, without the work.

Tonecast reads the conversation, writes replies in your voice, and lets you dictate polished text anywhere you type.

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‹MMumonline

TODAY

Are you still coming for dinner Sunday? 😊9:41

And could you bring something for dessert?9:42

Of course — I'll bring dessert. Any requests?9:43

Tonecastreading the conversation

Warm yes1
Yes! Wouldn't miss it 💛
Offer dessert↵
Of course — I'll bring dessert. Any requests?
Ask timing3
Sounds good! What time should I be there?

＋

Message

⌘§to reply

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.

$ download Tonecast.dmg

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Press §, ⌘§, or Fn anywhere on macOS

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

Choose keys or Cloud.

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

Press the hotkey.

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

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.

M Gmail

Q2 planning + budget review

Planning☆

AAlex RiveraCan we lock the planning session for Tuesday? The team wants to fold in budget review…Mon 9:02 AM

SYouLet me check the numbers — Taylor flagged the budget piece isn't final yet…Mon 9:40 AM

TTaylor ChenThe figures won't be locked until Thursday. I'd rather not present a draft to leadership…Mon 10:15 AM

Alex Rivera to me, Taylor ▾2:34 PM↩

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

A 📎 🔗 😊 🖼 ⋮🗑

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

Same you. Different voice. Every conversation.

WhatsAppThe Mom Text

Are you coming for dinner Sunday?

yeah Sunday works! what should I bring

Casual, lowercase, warm

SuperhumanThe CEO Email

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

Any appThe Awkward Reply

Staring at the same sentence for 10 minutes...

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

Natural, confident, relaxed

iMessageThe Group Chat

47 unread messages

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

Quick, casual, contextually aware

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%

Ready

Formality20%

Warmth80%

Brevity70%

Emoji usage60%

Slack

Ready

Formality40%

Warmth60%

Brevity65%

Emoji usage25%

iMessage

Ready

Formality15%

Warmth90%

Brevity80%

Emoji usage45%

Contact profile

Alex

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

Email. Chat. All of it.

Tonecast works wherever you communicate.

SuperhumanGmailSlackOutlookWhatsAppApple MailTelegramiMessageTeamsChromeDiscordLinkedInXSafariAny app

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.

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.

	Tonecast	Wispr Flow	SuperWhisper	Grammarly	Superhuman AI
Reads conversations		No	No	No
Learns voice per contact		No	No	No	No
Generates reply options		No	No	No
Voice dictation				No	No
Bring your own key		No	No	No	No
Works offline	No			No	No
Multi-platform	Soon
Price	Free BYOKCloud optional: $10/mo	$15/mo	$8/mo	$12/mo	$30/mo

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Open source

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