PrepSense.io - Cookie Policy

Effective Date: September 10, 2025

This Cookie Policy explains how PrepSense.io ("we", "us", "our") uses cookies and similar technologies on our platform. It should be read together with our Privacy Policy and Terms of Service.

1. What Are Cookies?

Cookies are small text files stored on your device when you visit a website. They help the site function, remember your preferences, and improve performance. Related technologies we may use include local storage, session storage, and tracking pixels (for analytics if you consent).

2. How We Classify Cookies

We group cookies into the categories below. Only Essential cookies are placed without prior consent. Others require opt‑in in jurisdictions that mandate consent (e.g., EU/EEA, UK).

Category	Purpose	Examples (Name / Expires)	Consent
Essential	Core functionality: authentication (session/JWT), security (CSRF), load balancing, preserving your in‑progress selections.	session / end of browser session access_token / 30 days (when enabled) csrf_token / session	Not required (legitimate interest)
Preference	Remember user settings like chosen domain, exam, difficulty level, UI preferences.	user_prefs / 6 months	Consent or implied (toggle in settings)
Analytics	Understand aggregated usage to improve content & performance (e.g., Google Analytics).	_ga / 13 months _gid / 24 hours	Explicit opt‑in required before load
Marketing	Future use (e.g., remarketing tags). Currently NOT in active use.	—	Explicit opt‑in (not set today)

3. Why We Use Cookies

• Authentication: Maintain your logged‑in state (session or JWT).
• Security: Mitigate CSRF, abuse, and session hijacking.
• Preferences: Persist selected learning parameters to streamline your workflow.
• Performance & Reliability: Load balancing, rate‑limiting signals.
• Analytics (if enabled): Improve question quality, feature prioritization.

4. Managing Your Choices

You can manage non‑essential cookies in three ways:

• Use the in‑app Cookie Settings (coming soon) to opt in/out of analytics.
• Adjust your browser settings to block or delete cookies.
• Use private / incognito mode for a temporary session without stored preferences.

Blocking essential cookies may prevent you from logging in or using core study features.

5. Third‑Party Services

We may load the following only after consent (if applicable):

• Google Analytics: Usage metrics with IP anonymization where supported.
• Google OAuth: Used strictly for sign‑in; sends no marketing cookies from us.

6. Data Retention

Authentication cookies (JWT) expire automatically (30 days when active). Session cookies end when you close the browser. Preference cookies auto‑expire after their defined lifetimes unless renewed by continued use. Aggregated analytics data may be stored longer in anonymized form.

7. Local & Session Storage

We may use localStorage/sessionStorage to cache lightweight UI state (e.g., active tab, last viewed question). These are not transmitted unless an API call sends them explicitly and are cleared manually or by your browser.

8. Updates to This Policy

We will update this Cookie Policy if we add new categories or third‑party tools. A version code or re‑consent banner will appear if material changes occur.

9. Contact

Questions or requests? Email us at support@prepsense.io.