ECHO CHAMBER
Private AI transcription that lives on your device.
Record meetings, transcribe in real-time, and generate AI summaries — all without an internet connection. Powered by on-device neural processing. No cloud. No accounts. No audio ever leaves your phone.
The Problem with Cloud Transcription
Every cloud recorder is a corporate wiretap.
When you use Otter.ai, Fireflies, or any cloud-based meeting assistant, your audio is streamed to their servers, stored on their infrastructure, and potentially used to train their AI models. Your confidential strategy discussions, legal consultations, and medical conversations become someone else's data asset.
Echo Chamber eliminates this risk entirely. There are no servers to breach, no cloud recordings to subpoena, and no third-party employees who can access your audio. The transcription engine runs on your phone's Neural Processing Unit — the same chip that powers Face ID.
- ✗Audio streamed to external servers
- ✗Company employees can access recordings
- ✗Subject to subpoenas and warrants
- ✗May train AI with your data
- ✗Requires constant internet connection
- ✗Monthly subscription per seat
- Audio processed on your device's NPU
- Zero server-side access — we can't hear you
- Nothing to subpoena — no cloud exists
- AI model ships with the app, never phones home
- Works offline, in airplane mode, anywhere
- Your recordings, your device, your control
How It Works
Record. Transcribe. Understand.
From live audio to AI-powered insights — entirely on your iPhone.
Record or Import
Tap the microphone to record live conversations, meetings, lectures, or interviews. Or import existing audio and video files — MP3, M4A, WAV, AAC, MP4, MOV, AIFF, and CAF are all supported.
On-Device Transcription
The Parakeet TDT v3 engine — a 0.6 billion parameter neural model — transcribes speech to text in real-time on your phone's Neural Processing Unit. 25 languages supported with automatic detection.
AI-Powered Summaries
Generate structured summaries in 6 formats: Cornell Notes, Outline, Meeting Minutes, Bullet Points, Q&A, or Executive Summary. All processed by Apple Intelligence on-device.
Ask, Export, or Translate
Chat with your transcript using AI to extract insights. Export as PDF, SRT subtitles, Markdown, JSON, or plain text. Translate to 15+ languages — Spanish, French, German, Chinese, Japanese, Korean, and more.
AI Intelligence Suite
Six ways to understand your meetings.
Echo Chamber generates structured AI summaries in 6 professional formats — all processed on-device by Apple Intelligence. No transcript data ever leaves your phone.
Cornell Notes
Two-column academic format with cues, detailed notes, and summary. Ideal for studying recordings or reviewing key concepts.
Meeting Minutes
Formal format with attendees, agenda items, key decisions, and action items. Ready to share with stakeholders.
Outline
Hierarchical structure with main topics, subtopics, and supporting details. Perfect for long-form content.
Bullet Summary
Concise 5-15 bullet points capturing the essential takeaways. Quick reference for busy professionals.
Q&A Extract
Automatically extracts question-answer pairs from interviews, depositions, and consultations.
Executive Summary
250-word high-level overview with context, key findings, and recommendations. C-suite ready.
AI Transcript Chat
Ask your recordings anything.
Don't re-listen to an hour-long recording to find one detail. Ask the AI directly. "What did the client say about pricing?" "Summarize the legal risks discussed." "List all dates mentioned."
- Instant answers from any transcript
- Conversation history — ask follow-up questions
- Context-aware across long recordings
- Processed entirely on-device
Speaker Intelligence
Knows who's talking. Learns over time.
Echo Chamber automatically identifies and labels different speakers in every recording using on-device speaker diarization. Create persistent voice profiles, and the AI learns to recognize recurring speakers across all your transcripts.
Automatic Diarization
AI detects speaker changes and labels segments automatically — no manual tagging needed.
Voice Profile Learning
Save voice fingerprints using cosine similarity matching. Accuracy improves with every recording.
Custom Vocabulary
Add domain-specific terms per speaker to improve transcription accuracy for technical language.
We need to finalize the acquisition timeline before Q4.
Legal has flagged two compliance issues with the target.
Can we resolve those before the board meeting Friday?
I'll have the due diligence report ready by Thursday.
Import
Transcribe any audio or video file.
Import recordings from other apps, voice memos, podcast episodes, lecture recordings, or video files. Audio tracks are extracted automatically from video.
Drag and drop on iPad and Mac. All transcription happens locally — imported files never leave your device.
Export
Seven professional export formats.
Share transcripts in the format your workflow demands — from simple text to structured data.
Translation
Translate transcripts to 15+ languages.
After transcription, translate the full text into any of 15+ supported languages. Useful for multilingual teams, international clients, or studying foreign-language recordings.
Ecosystem
Everywhere you record.
Apple Watch
Start and control recordings from your wrist. View recent transcriptions. Syncs with your iPhone.
Calendar View
Browse recordings by date. See which days have recordings at a glance. Navigate your transcript history visually.
Full-Text Search
Search across all transcripts by title, date, or content. Spotlight integration surfaces results in iOS system search.
iCloud Sync
Optionally sync recordings across iPhone, iPad, and Mac. Files stay encrypted. Disable anytime.
Face ID Lock
Biometric authentication to access your recordings.
Live Activities
See recording progress on your Lock Screen.
Recording Recovery
Automatic recovery if the app crashes during recording.
Technical Specifications
Engine & Performance Details
Zero Telemetry Promise.
Echo Chamber contains no analytics SDKs, no crash reporting uplinks, and no user accounts. The AI model ships inside the app binary. Network permissions are not required. Read our full privacy philosophy.
Air-Gapped
No internet permission required.
Face ID
Biometric lock on all recordings.
On-Device AI
Model embedded in the binary.
Auto-Delete
Configurable recording expiry.
Built For
Professionals who can't afford a leak.
Attorneys & Legal Teams
Record depositions, client consultations, and case strategy sessions. Attorney-client privilege stays intact because no audio ever touches a server. Export to timestamped text or PDF for case files.
Physicians & Therapists
Document patient consultations and therapy sessions with full confidentiality. No HIPAA risk from cloud storage. Face ID lock prevents unauthorized access to sensitive recordings.
Executives & Board Members
Capture board meetings, strategy sessions, and M&A discussions. Generate Meeting Minutes with action items. No meeting bot joins your call — just tap record on your phone.
Related Reading
COMPARISON · 9 MIN READOtter.ai vs. Echo Chamber: The Real Cost of AI Transcription
Cloud-based meeting assistants are convenient, but they are also a massive security hole. We compare the market leader with our offline-first alternative.