Last updated: December 2025
Iridescent collects practice session data and performance metrics to power the spaced repetition learning system. This includes which voicings you practice, your accuracy, response times, and mastery progress.
We use TelemetryDeck for privacy-focused analytics. TelemetryDeck does not collect personal identifiers and is designed to be GDPR-compliant by default.
If you enable iCloud sync, your practice data syncs across your devices using Apple's CloudKit. This data is associated with your Apple ID and governed by Apple's privacy policy.
We do not collect your name, email address, or other personal contact information. We do not track your location. We do not sell or share individual user data with third parties.
We may analyze anonymized, aggregated performance data across all users to improve the curriculum and learning experience. This data cannot be used to identify individual users.
Your practice data is stored locally on your device and, if you enable iCloud sync, in your private iCloud container.
Questions? Email us at hey@districtonemobile.com