100% Data SovereigntyZero Trackers

Privacy Policy & Local Data Sovereignty

Effective Date: October 2026 • Verified Zero-Telemetry Specification

1. The Sovereign Data Principle

ChainWise Learn does not operate a centralized user database. When you learn, solve mathematical invariant drills, or bookmark lessons, no data packets containing your answers or study habits are transmitted to external servers.

Core Guarantee: You do not need to trust our privacy policy; the application architecture physically prevents data collection by running 100% of state logic client-side.

2. What We Store (Locally in Your Browser)

All persistence executes through the browser IndexedDB API under the database name chainwise_db_v1:

  • lessons_meta: Records which lessons you marked as completed and your personal bookmarks.
  • evaluation_logs: Local question history used exclusively to calculate your Diagnostic Accuracy.
  • spaced_decay_matrix: Ebbinghaus SM-2 algorithm intervals calculated locally on your device to schedule daily review.
  • user_preferences: Acoustic feedback, typography sizing, and high-contrast display toggles.

3. Zero Third-Party Trackers & Cookies

ChainWise Learn uses zero marketing cookies, zero Google Analytics, zero Meta pixels, and zero behavioral tracking SDKs. You can verify this by inspecting the browser Network tab.

4. Full Data Export & Deletion

You have total sovereignty over your learning data. You can export a full JSON backup of your database or permanently purge your IndexedDB storage at any time from the Settings & Storage panel.

Manage Local Storage →Back to Dashboard