🛡️ Privacy Policy - Dopamine Hunter

Last Updated: January 1, 2026

TL/DR:

We don't collect, store, or share your personal data. Period.

Everything stays on your device. The only external call is to generate AI messages, and we only send anonymous page titles (like "Funny cat videos")—no personal info, no tracking.

1. Single Purpose Declaration

Dopamine Hunter has ONE purpose: Help you break free from social media addiction through intelligent intervention reminders.

We do NOT:

❌ Track your browsing history
❌ Show advertisements
❌ Mine cryptocurrency
❌ Collect data for third parties

2. Chrome Extension Permissions Justification

Chrome Web Store requires us to explain why we need each permission. Here's complete transparency:

📋 storage

Why we need it: Save your preferences and progress locally on YOUR device.

What we store:

Interface language (English or Chinese)
Intervention frequency (default: 15 minutes)
Monitored websites list
Pause status and end time
Statistics: total, daily, and weekly intervention counts
Achieved milestones (10, 50, 100, etc.)
Donation button click count (to hide reminder after first click)

Where it's stored: chrome.storage.local - stays on your computer, NEVER uploaded to our servers (we don't even have servers!).

🎯 activeTab

Why we need it: Access the current tab ONLY when you click the extension icon or test the intervention feature.

What we do:

Check if you're on a monitored website (YouTube, TikTok, etc.)
Get page title to generate personalized messages

When it's used: Only when YOU interact with the extension—never automatically in the background.

✏️ scripting

Why we need it: Inject intervention popup overlay onto social media pages.

What we inject:

content.js - Monitors time and triggers interventions
overlay.css - Visual style for the intervention popup
Preset messages (100+ curated interventions)

Security: We ONLY inject code packaged with the extension. No remote code execution. No eval(). No funny business.

🌐 host_permissions (:///*)

Why we need it: Monitor your time spent on distracting websites.

Actual scope: Despite the broad permission, we ONLY activate on these 16 platforms:

YouTube, TikTok, Douyin, Bilibili, Kuaishou
Instagram, Twitter/X, Facebook, Reddit, Pinterest
iQiyi, Youku, V.QQ, Xigua, Snapchat

What we access: Page title (e.g., "10 Hours of Cat Videos") and current URL. That's it.

What we DON'T access: Passwords, credit cards, private messages, search history, or any sensitive data.

3. Data We Collect

Data Type	Collected?	Purpose	Where Stored
User Settings	✅ Yes	Remember your preferences	Your device only
Statistics	✅ Yes	Track your progress	Your device only
Page Titles	✅ Temporarily	Generate AI messages	Not stored
Browsing History	❌ No	-	-
Personal Info (Name, Email)	❌ No	-	-
Passwords/Credentials	❌ No	-	-
IP Address	❌ No	-	-

4. Third-Party Services

Cloudflare Worker (API Proxy)

URL: https://ai-cognitive-assistant-worker.jszhang98.workers.dev

Purpose: Securely call Google's Gemini AI to generate intervention messages.

What we send:

Page title (e.g., "Top 10 Gaming Moments")
Your language preference (English or Chinese)

What we receive: A JSON text message (e.g., "This video is designed to hook you. Can you resist?").

Data retention: ZERO. The worker processes requests and immediately discards data. No logs, no storage.

Google Gemini AI API

Purpose: Generate personalized intervention messages based on page titles.

Privacy protection:

✅ Requests are anonymous (no user ID sent)
✅ Only page titles are sent (e.g., "How to make pancakes")
✅ Your IP is hidden by our Cloudflare Worker proxy
✅ No personal identifiers included

Google's Privacy Policy: https://policies.google.com/privacy

Note: If the AI service is unavailable, we automatically fall back to 100+ pre-written intervention messages stored locally in the extension.

5. No Remote Code Execution

Chrome Web Store Policy Compliance:

✅ All code is packaged within the extension ZIP file
✅ No eval() or new Function() usage
✅ No dynamically loaded scripts from external URLs
✅ Cloudflare Worker returns TEXT data (JSON), not executable code

6. Cookies

We don't use cookies. We use chrome.storage.local instead, which is more secure and private.

7. Analytics

We don't use Google Analytics, Mixpanel, or any tracking service. Your usage data stays on YOUR device.

8. Data Sharing

We don't share, sell, or rent your data to anyone. Ever. Because we don't collect it in the first place.

9. Your Rights

Access: All your data is in chrome.storage.local. You can view it via Chrome DevTools.
Delete: Uninstall the extension or clear data in the extension settings.
Export: Currently not supported, but your data is minimal (just settings and stats).

10. Children's Privacy

This extension is suitable for all ages. We don't knowingly collect data from anyone—children or adults.

11. Changes to This Policy

If we update this policy, we'll update the "Last Updated" date at the top. Major changes will be announced in the extension's update notes.

12. Contact Us

Questions? Concerns? Just want to say hi?

Email: jansenzhang@example.com
Support: https://ko-fi.com/jansenzhang

13. Developer Information

Developer: Jansen Zhang (jszhang98)

Type: Individual Developer (Non-Trader)

Purpose: Free productivity tool to help people reclaim their time from social media addiction.

Built with ❤️ for people who want their time back.
Dopamine Hunter - 100% Free, 0% Tracking, Forever.