On-device transcription
Transcription happens entirely on your Mac. Your conversations never leave your machine.
How local transcription works →
100% localYour calls never leave your Mac.
A menu-bar recorder that captures your mic and the other side of the call as clean, separate tracks — then transcribes and labels every speaker, entirely on this machine.
New here? See getting started →
Free · macOS 14.4+ · Notarized by Apple
Knows who’s speaking
Name a voice once and echo99 recognizes that person in your next call — matched on your Mac against voiceprints you control.
How speaker identification works →
On-deviceSeparate audio tracks
High-quality audio recording saves your microphone and system output as two separate WAV files.
How system-audio capture works →
Mic + SystemGets the words right
Teach it the names, jargon, and acronyms your calls use, so your transcript spells them correctly.
Custom vocabularyAutomatic recording
Turn on Auto-record calls once. When another app on your Mac uses your microphone for a few seconds, echo99 automatically starts recording and stops when the microphone is no longer in use.
One-time toggleNo meeting bot
echo99 never joins your calls. No bots, no invites, nothing added to the call itself.
Bot-free captureHow it works
Three simple steps. All from your menu bar.
Start your way
Start manually from the menu bar, or enable Auto-record calls once and let echo99 handle future calls automatically.
Record mic + system audio
echo99 captures your microphone and system output separately in real time.
Review transcript and notes
After recording, transcription runs on-device so you can read and search every word — and speakers you’ve named are labeled automatically. On-device AI notes are in development.
Your files. Your workflow.
Everything is saved locally and organized for you.
mic.wav
Your microphone
(You / Me)
system.wav
System audio
(Them)
metadata.json
Timestamps, app info,
device info
transcript.json
Full transcript with
speaker labels
Saved to: ~/Documents/echo99/YYYY-MM-DD – Meeting Title/
In development
On the roadmap — not part of your recordings folder yet.
ai-notes.md
AI-generated notes,
on-device
Searchable archive
Browse, search,
and find anything
Why professionals trust echo99
Built for people who value privacy, accuracy, and control.
Apple Silicon
Privacy focused
No cloud. No bots. No training. Your data stays on your Mac.
Separate tracks and “Me” / “Them” labels make transcripts easier to read.
You decide what to keep, share, or delete. Nothing is uploaded.
Menu-bar only, minimal UI, built with macOS in mind.
Pick the on-device transcription and speaker models that fit your Mac and your calls.
Swap headphones or AirPods mid-call and echo99 keeps recording as one continuous track.
- No cloud
- Audio and transcripts land in
~/Documents/echo99as plain WAV and JSON — yours to keep, search, or delete. - No account
- No signup, no subscription, limited telemetry: the launch update check sends an anonymous install id — nothing more. Download it, click record.
- No upload
- Transcription and speaker labeling run on the Mac in front of you. Wi-Fi off? Works the same.