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DuoCast vs echo99

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

DuoCast compared with echo99
DetailDuoCast logo DuoCastecho99 logo echo99
What it doesTurn any document into a two-voice podcast you can listen to on your commute Record, transcribe, and summarize calls on your Mac
StageNot given Not given
FoundedNot given Not given
Based inNot given CZ
Pricing modelFreemium Free
PricingFree: 3-minute preview of any episode with spoken-intro watermark, no download. Pro: $12/mo for unlimited episodes up to 50,000 characters, MP3 downloads, no watermark, priority queue. Credit pack: $9 for 20 full episodes up to 50,000 characters with MP3 downloads, credits never expire, no subscript Not given
Key features
  • Paste text, PDF, DOCX upload, or article URL input
  • Two-host conversational format with Q&A dialogue
  • Self-hosted speech synthesis models
  • 5–15 minute episodes with chapters and synced transcript
  • MP3 download capability on Pro plan
  • Free 3-minute preview on any document
  • Priority queue processing for Pro subscribers
  • Support for documents up to 50,000 characters
  • No watermark on Pro and Credit pack episodes
  • Records microphone and system audio as separate WAV files
  • Local transcription in 25 European languages
  • Automatic speaker identification and voice matching
  • Automatic call recording with one-time setup
  • AI-powered meeting summaries with key points and action items
  • Works with Zoom, Teams, Google Meet, FaceTime, Webex, and browser calls
  • Live transcript preview in floating window during calls
  • Recordings stored locally as plain WAV, JSON, and Markdown files
  • Handles mid-call audio device changes without interruption
What makes it different
  • Two-voice dialogue format keeps listeners engaged better than monotone reading
  • Self-hosted voice models optimized specifically for natural Chinese and Japanese pronunciation
  • No per-character pricing, so long documents are voiced end-to-end without truncation
  • Automatically rewrites source documents into conversational format
  • Credit packs never expire, providing flexible usage without subscription commitment
  • No meeting bot joins the call—recording happens entirely on your Mac
  • All audio, transcripts, and processing stay on your Mac with no uploads
  • Free with no account, signup, or subscription required
  • Speaker voices recognized across calls without cloud processing
  • Works offline after initial model downloads
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)1 no change since last check18 +2 (up) since last check
Trust Flow (Majestic)313
Citation Flow (Majestic)1027
Referring domains (Majestic)536

4 details filled in for both companies.

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