Native Mac app. Free BYOK. Optional Cloud.Your words, without the work.
Tonecast reads the conversation, writes replies in your voice, and lets you dictate polished text anywhere on your Mac.
Tonecast
Your words, refined.
Rewrite, reply, or speak. Tonecast handles the tone.
2 days
Streak
1.4h
Saved
24.3K
Words
Rewrite
same thought, sharper
Reply
read the thread, write back
Voice
speak freely, land polished
Confirm Tuesday
Tuesday works. I'll send the notes before lunch.
Suggest Friday
Friday is cleaner for me. Still gives us time to prep.
Ask Context
What scope are you thinking for the budget review?
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.
$ download Tonecast.dmg
Add keys or start Tonecast Cloud in Settings
Press §, ⌘§, or Fn anywhere on macOS
01
Download the Mac app.
Tonecast lives in your menu bar and appears only when you call it.
02
Choose keys or Cloud.
Bring Anthropic and Groq keys for direct mode, or use Tonecast Cloud if you want setup handled.
03
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 understands the conversation, offers three useful directions, and pastes the one you choose into the app you are already using.
Superhuman thread
Q2 planning timeline
Lena Walsh
Product Ops
Can we lock the planning session for Tuesday? Sarah wants to fold in budget review too. I know it is tight, but it would help to close this out before the offsite.
Compose field
Tonecast glass pill
Three routes. One key.
Confirm Tuesday
1Tuesday works. I will send a clean version of the notes before lunch so we can use the call for decisions.
Suggest Friday
2Friday is cleaner for me. That gives us time to tighten the budget numbers instead of rushing the review.
Ask for scope
3Before I commit, what scope are you thinking for the budget review? Quick alignment or full deep dive?
Pasted reply
Friday is cleaner for me. That gives us time to tighten the budget numbers instead of rushing the review.
Learns the relationship
It learns how you talk to your boss.
And your mom.
Same you. Different voice. Every conversation.
Are you coming for dinner Sunday?
yeah Sunday works! what should I bring
Casual, lowercase, warm
Thoughts on this direction?
Hi James, I've reviewed the proposal and think the direction is strong. Two thoughts on the timeline...
Polished, structured, 2 paragraphs
Staring at the same sentence for 10 minutes...
Hey -- sounds good, I'm in. Let me know the details.
Natural, confident, relaxed
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.
Slack
ReadyiMessage
ReadyContact profile
Sarah Chen
More direct than default email. Shorter openings. No exclamation marks. Signs off with first name only.
Local and editable
Email. Chat. All of it.
Tonecast works wherever you communicate.
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.
| Tonecast | Wispr Flow | SuperWhisper | Grammarly | Superhuman AI | |
|---|---|---|---|---|---|
| Reads conversations | - | - | - | ||
| Learns voice per contact | - | - | - | - | |
| Generates reply options | - | - | - | ||
| Voice dictation | - | - | |||
| Bring your own key | - | - | - | - | |
| Works offline | - | - | - | ||
| Multi-platform | - | ||||
| Price | Free BYOKCloud optional: $10/mo | $15/mo | $8/mo | $12/mo | $30/mo |
Your words,
without the work.
Press a key, pick the reply, and get back to the thing you were actually doing.