Privacy Policy
1. Introduction & Overview
This Privacy Policy applies to the mobile application Interval. Interval is an auditory music training application and reference tool.
Interval is designed with an absolute Zero-Permission and No-Microphone Policy. We believe auditory training should be private, instantaneous, and accessible completely offline.
2. Audio Synthesis & Zero Microphone Access
2.1 Zero Audio Recording: Interval does NOT request microphone permissions. The app does not listen to your voice, record ambient background sound, or monitor musical instruments.
2.2 Procedural Mathematical Waveforms: All musical tones, intervals, and metronome beats are synthesized algorithmically on-the-fly using standard client-side frequency formulas and tactile haptics. No remote soundbanks or sample files are downloaded.
2.3 100% On-Device Score State: Your training accuracy, quiz attempts, and scores are stored strictly within the private local storage sandbox of your device. This data is never transmitted to an external server.
3. Device Permissions Policy
The compiled manifest for Interval contains zero dangerous permissions:
- NO Internet Permission: The app has zero network capability.
- NO Microphone Permission: Absolutely no microphone listening or audio capture.
- NO Storage Access: The app does not access photos, media, or personal files.
- NO Location or Contacts: Zero access to sensitive device sensors.
4. Third-Party Frameworks & Advertising
Interval contains no third-party SDKs, advertising libraries, or telemetry trackers. You will never experience banner ads, interstitials, video rewards, or tracking cookies inside the application.
5. Data Retention & Deletion
You maintain full control over your local quiz scores. To reset or delete all local data, clear the application storage via Settings → Apps → Interval → Storage → Clear Storage, or uninstall the application from your device.
6. Children's Privacy (COPPA & GDPR-K Compliance)
Interval is fully safe for music students of all ages, including children under 13 in the U.S. and under 16 in the E.U. Because no personal data is collected or transmitted, Interval complies fully with COPPA, GDPR-K, and modern Families guidelines.
7. Contact
If you have questions regarding this Privacy Policy or Interval, contact:
PitchLab Audio Privacy Team
Email: support@pitchlab.audio