Slow Down Music Practice — Privacy Policy

Last updated: April 16, 2026

Overview

The Slow Down Music Practice Chrome extension allows you to shift the pitch of audio while using the Slow Down music practice app. This policy explains how the extension handles your data.

Audio Capture

The extension uses Chrome's tabCapture API to capture audio from the current browser tab. This audio capture is only activated on Slow Down domains (ralenty.com, slowdownpractice.com, slowdowntunes.com, slowdownvideos.com, slowdown.pro, slowdown.cloud, and localhost for development). The extension cannot and does not capture audio from any other websites.

Audio Processing

Real-time audio features (pitch shifting, vocal separation) happen entirely within your browser using the Web Audio API. Captured tab audio is processed in real time and routed back to your speakers — it is never recorded or stored for these features.

Music Analysis

To detect BPM, musical key, and chords, the extension captures a short snippet of tab audio (up to 180 seconds) and sends it to the Slow Down server for analysis. This audio is:

  • Captured from the browser tab's audio output (not downloaded from any source)
  • Sent only to the Slow Down server — never to any third party
  • Used exclusively to extract musical metadata (BPM, key, chords)
  • Automatically deleted from the server immediately after analysis completes
  • Never stored, retained, or used for any other purpose

The detected metadata is saved to your Slow Down account to display on the video page.

Data Collection

The extension does not collect any personal data. The only data stored locally is your preference for whether pitch shifting should auto-enable on Slow Down pages, saved via Chrome's storage API on your device.

Permissions Explained

  • activeTab: Required to initiate audio capture on the current tab
  • tabCapture: Core functionality — captures tab audio for pitch processing
  • offscreen: Creates a background document for audio processing via Web Audio API
  • storage: Saves your auto-enable preference locally
  • tabs: Checks the current tab URL to determine if it's a Slow Down page

Third-Party Services

The extension communicates only with the Slow Down server for music analysis (as described above). It does not communicate with any other third-party services. It has no analytics and no tracking.

Contact

Questions about this privacy policy? Reach out at theo@theowecker.com.