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Whisperstream vs Diurnal

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Whisperstream compared with Diurnal
DetailWhisperstream logo WhisperstreamDiurnal logo Diurnal
What it doesOn-device dictation for Windows with no cloud transcription A native Mac notepad where everything you write becomes a task, with automatic tidying
StageNot given Not given
FoundedNot given Not given
Based inCA Not given
Pricing modelNot given Not given
Pricing$29 for 1 device, $49 for up to 2 devices. One-time payment, no subscription. Not given
Key features
  • On-device speech recognition using NVIDIA Parakeet model
  • Text delivery to compatible applications via clipboard or simulated keystrokes
  • Searchable transcript history with audio replay and encryption
  • Import and transcribe audio files locally
  • Support for 39 languages including English, Spanish, French, German, Chinese, and Japanese
  • Optional AI cleanup to remove filler words and fix grammar
  • Custom dictionary for names, technical terms, and acronyms
  • Works entirely on CPU without requiring GPU for core transcription
  • Write tasks inline as natural paragraphs
  • No required dates for tasks
  • Automatic task archiving
  • Project management with deadlines
  • Google Calendar integration
  • Voice capture
  • Focus mode with Pomodoro timer
  • AI assistant integration via MCP
  • Offline sync across all Macs
  • Drag-and-drop task planning
What makes it different
  • Works offline after initial setup with no internet connection needed for core transcription
  • Broad app compatibility without requiring add-ins or plugins
  • Runs on CPU with no GPU required for speech recognition
  • Automatic tidying eliminates manual maintenance
  • No overdue piles or red tasks
  • Native Mac performance built for one platform
  • Works offline without syncing delays
  • Combines notepad freedom with task structure
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)17 +1 (up) since last check7 +1 (up) since last check
Trust Flow (Majestic)173
Citation Flow (Majestic)2924
Referring domains (Majestic)7823

3 details filled in for both companies.

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