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Security Architecture

Privacy is our
Core Feature.

We don't just have a privacy policy; we have a privacy architecture. MiddleViewer processes audio and video 100% locally. For intelligence, we use a transient, stateless analysis pipeline where your data is never stored.

Your Mac
Audio Processing Local Neural Engine
Transient Processing / No Retention
Our Servers
No Data Stored Billing Only
Data Retention
Zero Days
We don't have a database for your content.
AI Model
On-Device (Apple Silicon)
No OpenAI API calls for audio.
Telemetry
Opt-in Only
Crash reports are anonymized.

Local Storage Policy

All audio recordings, transcripts, and generated notes are stored locally in your Application Support directory. We utilize standard macOS sandboxing to ensure no other application can access these files.

~/Library/Application Support/MiddleViewer/Data

Model Training & Intelligence

Transcription uses on-device Whisper models. For analysis, we use a secure, stateless call to Gemini. We do not store your data, and it is never used to train models. Your conversations are transient inputs: processed once and immediately discarded from external memory.

  • No "Training Loop" back to servers.
  • Conversations are not sampled for quality assurance.

Encryption & Deletion

While data rests on your disk, it relies on FileVault (macOS Disk Encryption). Within the app, you have the right to permanent deletion. When you delete a session in MiddleViewer, we execute a secure overwrite of the file blocks, making recovery impossible.

Common Privacy Questions

Does MiddleViewer record without permission?

No. We require a "Consent Check" before the microphone activates. Additionally, macOS provides a system-level indicator (Orange Dot) whenever the microphone is in use.

What happens if I cancel my subscription?

The app reverts to read-only mode. You retain access to all your locally stored history. We do not lock your data behind a paywall.

Is this GDPR/CCPA compliant?

Because we do not process your data as a controller (it stays on your device), MiddleViewer simplifies compliance. You are the data controller; the software is merely a tool.