ShadowVoice Privacy Policy

Last Updated: December 5, 2025

Introduction

ShadowVoice is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our language learning application.

EchoFlow is designed with privacy in mind. All your data stays on your device and is never transmitted to external servers.

Information We Collect

1. Audio Recordings

What we collect: Voice recordings you create during practice sessions.

How we use it:

• Compare your pronunciation with native audio
• Generate visual waveforms for feedback
• Store for your review and practice history

Storage: All recordings are stored locally on your device only. They are never uploaded to any server.

2. Practice Statistics

What we collect:

• Practice session duration
• Number of sentences practiced
• Current and longest practice streaks
• Achievement progress
• Learning progress per content

How we use it:

• Track your learning progress
• Display statistics and achievements
• Provide personalized practice goals

Storage: Stored locally in your device’s secure storage (UserDefaults and Core Data).

3. Imported Content

What we collect: Audio or video files you choose to import into the app.

How we use it:

• Generate subtitles using on-device speech recognition
• Create practice materials from your content

Storage: Stored in the app’s local Documents folder on your device.

Device Permissions

Microphone Access