Privacy Policy

Last Updated: March 2026

1. Introduction

We designed Murmur around a fundamental reality: Protected Health Information (PHI) is the most sensitive data in the world. Therefore, our privacy policy is built on an absolute zero-knowledge architecture.

2. Zero-Knowledge Processing

Murmur operates locally on your hardware. When you dictate, your audio is captured by your microphone, instantly processed into text by the Whisper AI model running locally on your Apple Silicon (or compatible Windows) processor, and injected into your target application format.

• No Audio Storage: Audio data is kept in volatile memory strictly for processing and instantly overwritten. It is never saved to the hard drive.
• No Cloud Transmission: Your voice does not travel over the internet to be transcribed.
• No Telemetry Tracking: We do not track what applications you use the software in or the contents of your dictations.

3. Cloud Features (Pro Only)

If you explicitly upgrade to a Pro tier and enable advanced cloud-powered note structuring (e.g., sending raw text to GPT-4 for SOAP note formatting), that specific text data is securely transmitted via TLS encryption to our BAA-covered API endpoints. It is immediately structured and returned without being stored or used for any model training. The core local dictation feature never uses this pipeline.

4. Payment Data

We use Stripe to process all license payments. We do not store or process any of your credit card information directly.