AI Speech-to-Text

Megaphone

Private, context-aware dictation for Mac that transcribes and rewrites speech using on-device AI.

M

Megaphone

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What is Megaphone?

Megaphone is a free dictation app for macOS that uses Apple's on-device Foundation Models to transcribe speech and rewrite it directly at the cursor.

Megaphone vs Similar AI Tools

Pricing ModelFreeFreeFree, Freemium, Free TrialFree
Free Credits
Key Features
  • On-device dictation with SpeechAnalyzer
  • Smart Cleanup to remove filler words
  • Personal Dictionary for custom terms
  • On-device transcription via Apple's Speech framework, no network calls
  • Global, fully rebindable keyboard shortcut (default ⌘⇧D)
  • Live waveform and partial transcript while speaking
  • Smart AI cleanup removing ums, fillers, and false starts
  • 50+ language support with automatic detection
  • Custom dictionary for names and jargon (Pro)
  • Auto-edits filler words and grammar
  • Works in any Windows app
  • Three modes: Basic, Smart, Command
Pros
  • On-device processing ensures privacy
  • No API key or cloud subscription needed
  • 100% on-device, ensuring privacy
  • Small app size (4 MB) and low memory usage (~60 MB)
  • Automatically removes fillers and fixes punctuation
  • Works across all apps without switching windows
  • Completely free
  • No account needed
Cons
  • Requires macOS 26 and Apple Silicon
  • Limited to Apple's on-device models
  • Requires macOS 26 (Tahoe) and Apple Silicon
  • Intel Macs not supported (older versions available but send audio to Apple)
  • Free plan limited to 1000 words per week
  • May occasionally mishear uncommon names
  • Only available on Windows
  • Requires hotkey activation
Best For
  • Mac users who want private dictation
  • Professionals writing emails and documents
  • macOS users seeking a private, offline dictation tool
  • Developers and power users who want to dictate code or commands
  • Busy professionals who write emails or messages frequently
  • Non-native speakers wanting polished text in multiple languages
  • Writers
  • Developers

How to use Megaphone?

  1. 1Install Megaphone on Mac (requires macOS 26 and Apple Silicon).
  2. 2Press the fn key to start dictation.
  3. 3Say "Hey Megaphone" followed by an instruction like "make that formal" to rewrite text.
  4. 4Add custom terms to the personal Dictionary for improved accuracy.
  5. 5Use Smart Cleanup to automatically remove filler words.

Megaphone Key Features

  • On-device dictation with SpeechAnalyzer
  • Smart Cleanup to remove filler words
  • Personal Dictionary for custom terms
  • Multiple language support (30 locales)
  • Screen Awareness to adapt to active app context
  • Hey Megaphone voice command for rewriting

Megaphone Use Cases

  • Dictating emails with tone adjustment
  • Taking notes with automatic cleanup
  • Writing code comments or documentation
  • Composing messages in Slack or other apps
  • Transcribing meetings locally

Megaphone Pricing & Free Credits

Megaphone currently operates on a Free model.

This tool is completely free to use

Free

$0

Complete dictation app with all features

Megaphone Pros & Cons

Pros

  • On-device processing ensures privacy
  • No API key or cloud subscription needed
  • Seamless cursor integration
  • Smart Cleanup handles filler words well
  • Personal Dictionary improves accuracy

Cons

  • Requires macOS 26 and Apple Silicon
  • Limited to Apple's on-device models
  • No cloud sync for dictionary

What is Megaphone best for?

  • Mac users who want private dictation
  • Professionals writing emails and documents
  • Developers who need hands-free coding input
  • Anyone wanting to avoid subscription fees

Megaphone FAQ

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